Convert struct cache_entry to use struct object_id by applying the
following semantic patch and the object_id transforms from contrib:

@@
struct cache_entry E1;
@@
- E1.sha1
+ E1.oid.hash

@@
struct cache_entry *E1;
@@
- E1->sha1
+ E1->oid.hash

Signed-off-by: brian m. carlson <sand...@crustytoothpaste.net>
---
 builtin/apply.c                  | 10 +++++-----
 builtin/blame.c                  |  2 +-
 builtin/checkout.c               |  6 +++---
 builtin/fsck.c                   |  2 +-
 builtin/grep.c                   |  3 ++-
 builtin/ls-files.c               |  2 +-
 builtin/merge-index.c            |  2 +-
 builtin/read-tree.c              |  2 +-
 builtin/rm.c                     |  2 +-
 builtin/submodule--helper.c      |  5 +++--
 builtin/update-index.c           | 10 +++++-----
 cache-tree.c                     |  4 ++--
 cache.h                          |  2 +-
 diff-lib.c                       | 31 ++++++++++++++++++-------------
 diff.c                           |  2 +-
 dir.c                            |  7 ++++---
 entry.c                          |  9 +++++----
 merge-recursive.c                |  2 +-
 read-cache.c                     | 24 ++++++++++++------------
 rerere.c                         |  3 ++-
 resolve-undo.c                   |  2 +-
 revision.c                       |  2 +-
 sha1_name.c                      |  2 +-
 t/helper/test-dump-split-index.c |  2 +-
 tree.c                           |  2 +-
 unpack-trees.c                   |  8 ++++----
 26 files changed, 79 insertions(+), 69 deletions(-)

diff --git a/builtin/apply.c b/builtin/apply.c
index 1a488f9e..ba0e75bf 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -3220,7 +3220,7 @@ static int read_file_or_gitlink(const struct cache_entry 
*ce, struct strbuf *buf
 {
        if (!ce)
                return 0;
-       return read_blob_object(buf, ce->sha1, ce->ce_mode);
+       return read_blob_object(buf, ce->oid.hash, ce->ce_mode);
 }
 
 static struct patch *in_fn_table(struct apply_state *state, const char *name)
@@ -3959,7 +3959,7 @@ static int get_current_sha1(const char *path, unsigned 
char *sha1)
        pos = cache_name_pos(path, strlen(path));
        if (pos < 0)
                return -1;
-       hashcpy(sha1, active_cache[pos]->sha1);
+       hashcpy(sha1, active_cache[pos]->oid.hash);
        return 0;
 }
 
@@ -4211,7 +4211,7 @@ static void add_index_file(struct apply_state *state,
                const char *s;
 
                if (!skip_prefix(buf, "Subproject commit ", &s) ||
-                   get_sha1_hex(s, ce->sha1))
+                   get_sha1_hex(s, ce->oid.hash))
                        die(_("corrupt patch for submodule %s"), path);
        } else {
                if (!state->cached) {
@@ -4220,7 +4220,7 @@ static void add_index_file(struct apply_state *state,
                                          path);
                        fill_stat_cache_info(ce, &st);
                }
-               if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
+               if (write_sha1_file(buf, size, blob_type, ce->oid.hash) < 0)
                        die(_("unable to create backing store for newly created 
file %s"), path);
        }
        if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
@@ -4335,7 +4335,7 @@ static void add_conflicted_stages_file(struct apply_state 
*state,
                ce->ce_mode = create_ce_mode(mode);
                ce->ce_flags = create_ce_flags(stage);
                ce->ce_namelen = namelen;
-               hashcpy(ce->sha1, patch->threeway_stage[stage - 1].hash);
+               oidcpy(&ce->oid, &patch->threeway_stage[stage - 1]);
                if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
                        die(_("unable to add cache entry for %s"), 
patch->new_name);
        }
diff --git a/builtin/blame.c b/builtin/blame.c
index 7ec78234..06b2c743 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -2409,7 +2409,7 @@ static struct commit *fake_working_tree_commit(struct 
diff_options *opt,
        }
        size = cache_entry_size(len);
        ce = xcalloc(1, size);
-       hashcpy(ce->sha1, origin->blob_sha1);
+       hashcpy(ce->oid.hash, origin->blob_sha1);
        memcpy(ce->name, path, len);
        ce->ce_flags = create_ce_flags(0);
        ce->ce_namelen = len;
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 8672d072..a9523ffa 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -76,7 +76,7 @@ static int update_some(const unsigned char *sha1, struct 
strbuf *base,
 
        len = base->len + strlen(pathname);
        ce = xcalloc(1, cache_entry_size(len));
-       hashcpy(ce->sha1, sha1);
+       hashcpy(ce->oid.hash, sha1);
        memcpy(ce->name, base->buf, base->len);
        memcpy(ce->name + base->len, pathname, len - base->len);
        ce->ce_flags = create_ce_flags(0) | CE_UPDATE;
@@ -92,7 +92,7 @@ static int update_some(const unsigned char *sha1, struct 
strbuf *base,
        if (pos >= 0) {
                struct cache_entry *old = active_cache[pos];
                if (ce->ce_mode == old->ce_mode &&
-                   !hashcmp(ce->sha1, old->sha1)) {
+                   !oidcmp(&ce->oid, &old->oid)) {
                        old->ce_flags |= CE_UPDATE;
                        free(ce);
                        return 0;
@@ -186,7 +186,7 @@ static int checkout_merged(int pos, struct checkout *state)
                stage = ce_stage(ce);
                if (!stage || strcmp(path, ce->name))
                        break;
-               hashcpy(threeway[stage - 1], ce->sha1);
+               hashcpy(threeway[stage - 1], ce->oid.hash);
                if (stage == 2)
                        mode = create_ce_mode(ce->ce_mode);
                pos++;
diff --git a/builtin/fsck.c b/builtin/fsck.c
index 2de272ea..f604adff 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -722,7 +722,7 @@ int cmd_fsck(int argc, const char **argv, const char 
*prefix)
                        mode = active_cache[i]->ce_mode;
                        if (S_ISGITLINK(mode))
                                continue;
-                       blob = lookup_blob(active_cache[i]->sha1);
+                       blob = lookup_blob(active_cache[i]->oid.hash);
                        if (!blob)
                                continue;
                        obj = &blob->object;
diff --git a/builtin/grep.c b/builtin/grep.c
index ae738312..8887b6ad 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -398,7 +398,8 @@ static int grep_cache(struct grep_opt *opt, const struct 
pathspec *pathspec, int
                if (cached || (ce->ce_flags & CE_VALID) || 
ce_skip_worktree(ce)) {
                        if (ce_stage(ce) || ce_intent_to_add(ce))
                                continue;
-                       hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name);
+                       hit |= grep_sha1(opt, ce->oid.hash, ce->name, 0,
+                                        ce->name);
                }
                else
                        hit |= grep_file(opt, ce->name);
diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index 00ea91aa..197f153f 100644
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -187,7 +187,7 @@ static void show_ce_entry(const char *tag, const struct 
cache_entry *ce)
                printf("%s%06o %s %d\t",
                       tag,
                       ce->ce_mode,
-                      find_unique_abbrev(ce->sha1,abbrev),
+                      find_unique_abbrev(ce->oid.hash,abbrev),
                       ce_stage(ce));
        }
        write_eolinfo(ce, ce->name);
diff --git a/builtin/merge-index.c b/builtin/merge-index.c
index 1c3427c3..ce356b1d 100644
--- a/builtin/merge-index.c
+++ b/builtin/merge-index.c
@@ -22,7 +22,7 @@ static int merge_entry(int pos, const char *path)
                if (strcmp(ce->name, path))
                        break;
                found++;
-               sha1_to_hex_r(hexbuf[stage], ce->sha1);
+               sha1_to_hex_r(hexbuf[stage], ce->oid.hash);
                xsnprintf(ownbuf[stage], sizeof(ownbuf[stage]), "%o", 
ce->ce_mode);
                arguments[stage] = hexbuf[stage];
                arguments[stage + 4] = ownbuf[stage];
diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index 8c693e75..9bd1fd75 100644
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -78,7 +78,7 @@ static void debug_stage(const char *label, const struct 
cache_entry *ce,
        else
                printf("%06o #%d %s %.8s\n",
                       ce->ce_mode, ce_stage(ce), ce->name,
-                      sha1_to_hex(ce->sha1));
+                      oid_to_hex(&ce->oid));
 }
 
 static int debug_merge(const struct cache_entry * const *stages,
diff --git a/builtin/rm.c b/builtin/rm.c
index b2fee3e9..109969d5 100644
--- a/builtin/rm.c
+++ b/builtin/rm.c
@@ -199,7 +199,7 @@ static int check_local_mod(unsigned char *head, int 
index_only)
                if (no_head
                     || get_tree_entry(head, name, sha1, &mode)
                     || ce->ce_mode != create_ce_mode(mode)
-                    || hashcmp(ce->sha1, sha1))
+                    || hashcmp(ce->oid.hash, sha1))
                        staged_changes = 1;
 
                /*
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index e79790f0..566cfdd7 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -296,7 +296,8 @@ static int module_list(int argc, const char **argv, const 
char *prefix)
                if (ce_stage(ce))
                        printf("%06o %s U\t", ce->ce_mode, 
sha1_to_hex(null_sha1));
                else
-                       printf("%06o %s %d\t", ce->ce_mode, 
sha1_to_hex(ce->sha1), ce_stage(ce));
+                       printf("%06o %s %d\t", ce->ce_mode,
+                              oid_to_hex(&ce->oid), ce_stage(ce));
 
                utf8_fprintf(stdout, "%s\n", ce->name);
        }
@@ -683,7 +684,7 @@ static int prepare_to_clone_next_submodule(const struct 
cache_entry *ce,
 
        strbuf_reset(&sb);
        strbuf_addf(&sb, "%06o %s %d %d\t%s\n", ce->ce_mode,
-                       sha1_to_hex(ce->sha1), ce_stage(ce),
+                       oid_to_hex(&ce->oid), ce_stage(ce),
                        needs_cloning, ce->name);
        string_list_append(&suc->projectlines, sb.buf);
 
diff --git a/builtin/update-index.c b/builtin/update-index.c
index ba04b197..a60a30a8 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -275,7 +275,7 @@ static int add_one_path(const struct cache_entry *old, 
const char *path, int len
        fill_stat_cache_info(ce, st);
        ce->ce_mode = ce_mode_from_stat(old, st->st_mode);
 
-       if (index_path(ce->sha1, path, st,
+       if (index_path(ce->oid.hash, path, st,
                       info_only ? 0 : HASH_WRITE_OBJECT)) {
                free(ce);
                return -1;
@@ -403,7 +403,7 @@ static int add_cacheinfo(unsigned int mode, const unsigned 
char *sha1,
        size = cache_entry_size(len);
        ce = xcalloc(1, size);
 
-       hashcpy(ce->sha1, sha1);
+       hashcpy(ce->oid.hash, sha1);
        memcpy(ce->name, path, len);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = len;
@@ -601,7 +601,7 @@ static struct cache_entry *read_one_ent(const char *which,
        size = cache_entry_size(namelen);
        ce = xcalloc(1, size);
 
-       hashcpy(ce->sha1, sha1);
+       hashcpy(ce->oid.hash, sha1);
        memcpy(ce->name, path, namelen);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = namelen;
@@ -658,7 +658,7 @@ static int unresolve_one(const char *path)
                ret = -1;
                goto free_return;
        }
-       if (!hashcmp(ce_2->sha1, ce_3->sha1) &&
+       if (!oidcmp(&ce_2->oid, &ce_3->oid) &&
            ce_2->ce_mode == ce_3->ce_mode) {
                fprintf(stderr, "%s: identical in both, skipping.\n",
                        path);
@@ -743,7 +743,7 @@ static int do_reupdate(int ac, const char **av,
                        old = read_one_ent(NULL, head_sha1,
                                           ce->name, ce_namelen(ce), 0);
                if (old && ce->ce_mode == old->ce_mode &&
-                   !hashcmp(ce->sha1, old->sha1)) {
+                   !oidcmp(&ce->oid, &old->oid)) {
                        free(old);
                        continue; /* unchanged */
                }
diff --git a/cache-tree.c b/cache-tree.c
index f28b1f45..345ea359 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -168,7 +168,7 @@ static int verify_cache(struct cache_entry **cache,
                                break;
                        }
                        fprintf(stderr, "%s: unmerged (%s)\n",
-                               ce->name, sha1_to_hex(ce->sha1));
+                               ce->name, oid_to_hex(&ce->oid));
                }
        }
        if (funny)
@@ -349,7 +349,7 @@ static int update_one(struct cache_tree *it,
                        }
                }
                else {
-                       sha1 = ce->sha1;
+                       sha1 = ce->oid.hash;
                        mode = ce->ce_mode;
                        entlen = pathlen - baselen;
                        i++;
diff --git a/cache.h b/cache.h
index b780a91a..a679484e 100644
--- a/cache.h
+++ b/cache.h
@@ -173,7 +173,7 @@ struct cache_entry {
        unsigned int ce_flags;
        unsigned int ce_namelen;
        unsigned int index;     /* for link extension */
-       unsigned char sha1[20];
+       struct object_id oid;
        char name[FLEX_ARRAY]; /* more */
 };
 
diff --git a/diff-lib.c b/diff-lib.c
index bc49c708..3007c852 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -155,7 +155,8 @@ int run_diff_files(struct rev_info *revs, unsigned int 
option)
                                if (2 <= stage) {
                                        int mode = nce->ce_mode;
                                        num_compare_stages++;
-                                       
hashcpy(dpath->parent[stage-2].oid.hash, nce->sha1);
+                                       oidcpy(&dpath->parent[stage - 2].oid,
+                                              &nce->oid);
                                        dpath->parent[stage-2].mode = 
ce_mode_from_stat(nce, mode);
                                        dpath->parent[stage-2].status =
                                                DIFF_STATUS_MODIFIED;
@@ -209,7 +210,8 @@ int run_diff_files(struct rev_info *revs, unsigned int 
option)
                                        continue;
                                }
                                diff_addremove(&revs->diffopt, '-', ce->ce_mode,
-                                              ce->sha1, 
!is_null_sha1(ce->sha1),
+                                              ce->oid.hash,
+                                              !is_null_oid(&ce->oid),
                                               ce->name, 0);
                                continue;
                        }
@@ -225,8 +227,8 @@ int run_diff_files(struct rev_info *revs, unsigned int 
option)
                                continue;
                }
                oldmode = ce->ce_mode;
-               old_sha1 = ce->sha1;
-               new_sha1 = changed ? null_sha1 : ce->sha1;
+               old_sha1 = ce->oid.hash;
+               new_sha1 = changed ? null_sha1 : ce->oid.hash;
                diff_change(&revs->diffopt, oldmode, newmode,
                            old_sha1, new_sha1,
                            !is_null_sha1(old_sha1),
@@ -261,7 +263,7 @@ static int get_stat_data(const struct cache_entry *ce,
                         int cached, int match_missing,
                         unsigned *dirty_submodule, struct diff_options 
*diffopt)
 {
-       const unsigned char *sha1 = ce->sha1;
+       const unsigned char *sha1 = ce->oid.hash;
        unsigned int mode = ce->ce_mode;
 
        if (!cached && !ce_uptodate(ce)) {
@@ -324,12 +326,13 @@ static int show_modified(struct rev_info *revs,
                          &dirty_submodule, &revs->diffopt) < 0) {
                if (report_missing)
                        diff_index_show_file(revs, "-", old,
-                                            old->sha1, 1, old->ce_mode, 0);
+                                            old->oid.hash, 1, old->ce_mode,
+                                            0);
                return -1;
        }
 
        if (revs->combine_merges && !cached &&
-           (hashcmp(sha1, old->sha1) || hashcmp(old->sha1, new->sha1))) {
+           (hashcmp(sha1, old->oid.hash) || oidcmp(&old->oid, &new->oid))) {
                struct combine_diff_path *p;
                int pathlen = ce_namelen(new);
 
@@ -343,22 +346,22 @@ static int show_modified(struct rev_info *revs,
                memset(p->parent, 0, 2 * sizeof(struct combine_diff_parent));
                p->parent[0].status = DIFF_STATUS_MODIFIED;
                p->parent[0].mode = new->ce_mode;
-               hashcpy(p->parent[0].oid.hash, new->sha1);
+               oidcpy(&p->parent[0].oid, &new->oid);
                p->parent[1].status = DIFF_STATUS_MODIFIED;
                p->parent[1].mode = old->ce_mode;
-               hashcpy(p->parent[1].oid.hash, old->sha1);
+               oidcpy(&p->parent[1].oid, &old->oid);
                show_combined_diff(p, 2, revs->dense_combined_merges, revs);
                free(p);
                return 0;
        }
 
        oldmode = old->ce_mode;
-       if (mode == oldmode && !hashcmp(sha1, old->sha1) && !dirty_submodule &&
+       if (mode == oldmode && !hashcmp(sha1, old->oid.hash) && 
!dirty_submodule &&
            !DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
                return 0;
 
        diff_change(&revs->diffopt, oldmode, mode,
-                   old->sha1, sha1, 1, !is_null_sha1(sha1),
+                   old->oid.hash, sha1, 1, !is_null_sha1(sha1),
                    old->name, 0, dirty_submodule);
        return 0;
 }
@@ -392,7 +395,8 @@ static void do_oneway_diff(struct unpack_trees_options *o,
                struct diff_filepair *pair;
                pair = diff_unmerge(&revs->diffopt, idx->name);
                if (tree)
-                       fill_filespec(pair->one, tree->sha1, 1, tree->ce_mode);
+                       fill_filespec(pair->one, tree->oid.hash, 1,
+                                     tree->ce_mode);
                return;
        }
 
@@ -408,7 +412,8 @@ static void do_oneway_diff(struct unpack_trees_options *o,
         * Something removed from the tree?
         */
        if (!idx) {
-               diff_index_show_file(revs, "-", tree, tree->sha1, 1, 
tree->ce_mode, 0);
+               diff_index_show_file(revs, "-", tree, tree->oid.hash, 1,
+                                    tree->ce_mode, 0);
                return;
        }
 
diff --git a/diff.c b/diff.c
index 534c12e2..bba80665 100644
--- a/diff.c
+++ b/diff.c
@@ -2700,7 +2700,7 @@ static int reuse_worktree_file(const char *name, const 
unsigned char *sha1, int
         * This is not the sha1 we are looking for, or
         * unreusable because it is not a regular file.
         */
-       if (hashcmp(sha1, ce->sha1) || !S_ISREG(ce->ce_mode))
+       if (hashcmp(sha1, ce->oid.hash) || !S_ISREG(ce->ce_mode))
                return 0;
 
        /*
diff --git a/dir.c b/dir.c
index 0ea235f3..9e09bcbd 100644
--- a/dir.c
+++ b/dir.c
@@ -525,7 +525,7 @@ static void *read_skip_worktree_file_from_index(const char 
*path, size_t *size,
                return NULL;
        if (!ce_skip_worktree(active_cache[pos]))
                return NULL;
-       data = read_sha1_file(active_cache[pos]->sha1, &type, &sz);
+       data = read_sha1_file(active_cache[pos]->oid.hash, &type, &sz);
        if (!data || type != OBJ_BLOB) {
                free(data);
                return NULL;
@@ -533,7 +533,7 @@ static void *read_skip_worktree_file_from_index(const char 
*path, size_t *size,
        *size = xsize_t(sz);
        if (sha1_stat) {
                memset(&sha1_stat->stat, 0, sizeof(sha1_stat->stat));
-               hashcpy(sha1_stat->sha1, active_cache[pos]->sha1);
+               hashcpy(sha1_stat->sha1, active_cache[pos]->oid.hash);
        }
        return data;
 }
@@ -713,7 +713,8 @@ static int add_excludes(const char *fname, const char 
*base, int baselen,
                                 !ce_stage(active_cache[pos]) &&
                                 ce_uptodate(active_cache[pos]) &&
                                 !would_convert_to_git(fname))
-                               hashcpy(sha1_stat->sha1, 
active_cache[pos]->sha1);
+                               hashcpy(sha1_stat->sha1,
+                                       active_cache[pos]->oid.hash);
                        else
                                hash_sha1_file(buf, size, "blob", 
sha1_stat->sha1);
                        fill_stat_data(&sha1_stat->stat, &st);
diff --git a/entry.c b/entry.c
index 519e0422..ce80d292 100644
--- a/entry.c
+++ b/entry.c
@@ -82,7 +82,7 @@ static int create_file(const char *path, unsigned int mode)
 static void *read_blob_entry(const struct cache_entry *ce, unsigned long *size)
 {
        enum object_type type;
-       void *new = read_sha1_file(ce->sha1, &type, size);
+       void *new = read_sha1_file(ce->oid.hash, &type, size);
 
        if (new) {
                if (type == OBJ_BLOB)
@@ -127,7 +127,7 @@ static int streaming_write_entry(const struct cache_entry 
*ce, char *path,
        if (fd < 0)
                return -1;
 
-       result |= stream_blob_to_fd(fd, ce->sha1, filter, 1);
+       result |= stream_blob_to_fd(fd, ce->oid.hash, filter, 1);
        *fstat_done = fstat_output(fd, state, statbuf);
        result |= close(fd);
 
@@ -148,7 +148,8 @@ static int write_entry(struct cache_entry *ce,
        struct stat st;
 
        if (ce_mode_s_ifmt == S_IFREG) {
-               struct stream_filter *filter = get_stream_filter(ce->name, 
ce->sha1);
+               struct stream_filter *filter = get_stream_filter(ce->name,
+                                                                ce->oid.hash);
                if (filter &&
                    !streaming_write_entry(ce, path, filter,
                                           state, to_tempfile,
@@ -162,7 +163,7 @@ static int write_entry(struct cache_entry *ce,
                new = read_blob_entry(ce, &size);
                if (!new)
                        return error("unable to read sha1 file of %s (%s)",
-                               path, sha1_to_hex(ce->sha1));
+                               path, oid_to_hex(&ce->oid));
 
                if (ce_mode_s_ifmt == S_IFLNK && has_symlinks && !to_tempfile) {
                        ret = symlink(new, path);
diff --git a/merge-recursive.c b/merge-recursive.c
index e3491268..e3db594d 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -382,7 +382,7 @@ static struct string_list *get_unmerged(void)
                }
                e = item->util;
                e->stages[ce_stage(ce)].mode = ce->ce_mode;
-               hashcpy(e->stages[ce_stage(ce)].oid.hash, ce->sha1);
+               oidcpy(&e->stages[ce_stage(ce)].oid, &ce->oid);
        }
 
        return unmerged;
diff --git a/read-cache.c b/read-cache.c
index 491e52d1..31eddec5 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -161,7 +161,7 @@ static int ce_compare_data(const struct cache_entry *ce, 
struct stat *st)
        if (fd >= 0) {
                unsigned char sha1[20];
                if (!index_fd(sha1, fd, st, OBJ_BLOB, ce->name, 0))
-                       match = hashcmp(sha1, ce->sha1);
+                       match = hashcmp(sha1, ce->oid.hash);
                /* index_fd() closed the file descriptor already */
        }
        return match;
@@ -178,7 +178,7 @@ static int ce_compare_link(const struct cache_entry *ce, 
size_t expected_size)
        if (strbuf_readlink(&sb, ce->name, expected_size))
                return -1;
 
-       buffer = read_sha1_file(ce->sha1, &type, &size);
+       buffer = read_sha1_file(ce->oid.hash, &type, &size);
        if (buffer) {
                if (size == sb.len)
                        match = memcmp(buffer, sb.buf, size);
@@ -202,7 +202,7 @@ static int ce_compare_gitlink(const struct cache_entry *ce)
         */
        if (resolve_gitlink_ref(ce->name, "HEAD", sha1) < 0)
                return 0;
-       return hashcmp(sha1, ce->sha1);
+       return hashcmp(sha1, ce->oid.hash);
 }
 
 static int ce_modified_check_fs(const struct cache_entry *ce, struct stat *st)
@@ -262,7 +262,7 @@ static int ce_match_stat_basic(const struct cache_entry 
*ce, struct stat *st)
 
        /* Racily smudged entry? */
        if (!ce->ce_stat_data.sd_size) {
-               if (!is_empty_blob_sha1(ce->sha1))
+               if (!is_empty_blob_sha1(ce->oid.hash))
                        changed |= DATA_CHANGED;
        }
 
@@ -624,7 +624,7 @@ void set_object_name_for_intent_to_add_entry(struct 
cache_entry *ce)
        unsigned char sha1[20];
        if (write_sha1_file("", 0, blob_type, sha1))
                die("cannot create an empty blob in the object database");
-       hashcpy(ce->sha1, sha1);
+       hashcpy(ce->oid.hash, sha1);
 }
 
 int add_to_index(struct index_state *istate, const char *path, struct stat 
*st, int flags, int force_mode)
@@ -691,7 +691,7 @@ int add_to_index(struct index_state *istate, const char 
*path, struct stat *st,
                return 0;
        }
        if (!intent_only) {
-               if (index_path(ce->sha1, path, st, HASH_WRITE_OBJECT)) {
+               if (index_path(ce->oid.hash, path, st, HASH_WRITE_OBJECT)) {
                        free(ce);
                        return error("unable to index file %s", path);
                }
@@ -705,7 +705,7 @@ int add_to_index(struct index_state *istate, const char 
*path, struct stat *st,
        /* It was suspected to be racily clean, but it turns out to be Ok */
        was_same = (alias &&
                    !ce_stage(alias) &&
-                   !hashcmp(alias->sha1, ce->sha1) &&
+                   !oidcmp(&alias->oid, &ce->oid) &&
                    ce->ce_mode == alias->ce_mode);
 
        if (pretend)
@@ -744,7 +744,7 @@ struct cache_entry *make_cache_entry(unsigned int mode,
        size = cache_entry_size(len);
        ce = xcalloc(1, size);
 
-       hashcpy(ce->sha1, sha1);
+       hashcpy(ce->oid.hash, sha1);
        memcpy(ce->name, path, len);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = len;
@@ -1424,7 +1424,7 @@ static struct cache_entry *cache_entry_from_ondisk(struct 
ondisk_cache_entry *on
        ce->ce_flags = flags & ~CE_NAMEMASK;
        ce->ce_namelen = len;
        ce->index = 0;
-       hashcpy(ce->sha1, ondisk->sha1);
+       hashcpy(ce->oid.hash, ondisk->sha1);
        memcpy(ce->name, name, len);
        ce->name[len] = '\0';
        return ce;
@@ -1849,7 +1849,7 @@ static char *copy_cache_entry_to_ondisk(struct 
ondisk_cache_entry *ondisk,
        ondisk->uid  = htonl(ce->ce_stat_data.sd_uid);
        ondisk->gid  = htonl(ce->ce_stat_data.sd_gid);
        ondisk->size = htonl(ce->ce_stat_data.sd_size);
-       hashcpy(ondisk->sha1, ce->sha1);
+       hashcpy(ondisk->sha1, ce->oid.hash);
 
        flags = ce->ce_flags & ~CE_NAMEMASK;
        flags |= (ce_namelen(ce) >= CE_NAMEMASK ? CE_NAMEMASK : ce_namelen(ce));
@@ -2038,7 +2038,7 @@ static int do_write_index(struct index_state *istate, int 
newfd,
                        continue;
                if (!ce_uptodate(ce) && is_racy_timestamp(istate, ce))
                        ce_smudge_racily_clean_entry(ce);
-               if (is_null_sha1(ce->sha1)) {
+               if (is_null_oid(&ce->oid)) {
                        static const char msg[] = "cache entry has null sha1: 
%s";
                        static int allow = -1;
 
@@ -2285,7 +2285,7 @@ void *read_blob_data_from_index(struct index_state 
*istate, const char *path, un
        }
        if (pos < 0)
                return NULL;
-       data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
+       data = read_sha1_file(istate->cache[pos]->oid.hash, &type, &sz);
        if (!data || type != OBJ_BLOB) {
                free(data);
                return NULL;
diff --git a/rerere.c b/rerere.c
index aaadec17..5d083ca5 100644
--- a/rerere.c
+++ b/rerere.c
@@ -980,7 +980,8 @@ static int handle_cache(const char *path, unsigned char 
*sha1, const char *outpu
                        break;
                i = ce_stage(ce) - 1;
                if (!mmfile[i].ptr) {
-                       mmfile[i].ptr = read_sha1_file(ce->sha1, &type, &size);
+                       mmfile[i].ptr = read_sha1_file(ce->oid.hash, &type,
+                                                      &size);
                        mmfile[i].size = size;
                }
        }
diff --git a/resolve-undo.c b/resolve-undo.c
index 468a2eb9..b40f3173 100644
--- a/resolve-undo.c
+++ b/resolve-undo.c
@@ -24,7 +24,7 @@ void record_resolve_undo(struct index_state *istate, struct 
cache_entry *ce)
        if (!lost->util)
                lost->util = xcalloc(1, sizeof(*ui));
        ui = lost->util;
-       hashcpy(ui->sha1[stage - 1], ce->sha1);
+       hashcpy(ui->sha1[stage - 1], ce->oid.hash);
        ui->mode[stage - 1] = ce->ce_mode;
 }
 
diff --git a/revision.c b/revision.c
index 8a29cb03..969b3d14 100644
--- a/revision.c
+++ b/revision.c
@@ -1275,7 +1275,7 @@ void add_index_objects_to_pending(struct rev_info *revs, 
unsigned flags)
                if (S_ISGITLINK(ce->ce_mode))
                        continue;
 
-               blob = lookup_blob(ce->sha1);
+               blob = lookup_blob(ce->oid.hash);
                if (!blob)
                        die("unable to add index blob to traversal");
                add_pending_object_with_path(revs, &blob->object, "",
diff --git a/sha1_name.c b/sha1_name.c
index ca7ddd6f..e4404391 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1435,7 +1435,7 @@ static int get_sha1_with_context_1(const char *name,
                            memcmp(ce->name, cp, namelen))
                                break;
                        if (ce_stage(ce) == stage) {
-                               hashcpy(sha1, ce->sha1);
+                               hashcpy(sha1, ce->oid.hash);
                                oc->mode = ce->ce_mode;
                                free(new_path);
                                return 0;
diff --git a/t/helper/test-dump-split-index.c b/t/helper/test-dump-split-index.c
index d1689248..e44430b6 100644
--- a/t/helper/test-dump-split-index.c
+++ b/t/helper/test-dump-split-index.c
@@ -23,7 +23,7 @@ int cmd_main(int ac, const char **av)
        for (i = 0; i < the_index.cache_nr; i++) {
                struct cache_entry *ce = the_index.cache[i];
                printf("%06o %s %d\t%s\n", ce->ce_mode,
-                      sha1_to_hex(ce->sha1), ce_stage(ce), ce->name);
+                      oid_to_hex(&ce->oid), ce_stage(ce), ce->name);
        }
        printf("replacements:");
        if (si->replace_bitmap)
diff --git a/tree.c b/tree.c
index 0089e52d..2b5a5a86 100644
--- a/tree.c
+++ b/tree.c
@@ -26,7 +26,7 @@ static int read_one_entry_opt(const unsigned char *sha1, 
const char *base, int b
        ce->ce_namelen = baselen + len;
        memcpy(ce->name, base, baselen);
        memcpy(ce->name + baselen, pathname, len+1);
-       hashcpy(ce->sha1, sha1);
+       hashcpy(ce->oid.hash, sha1);
        return add_cache_entry(ce, opt);
 }
 
diff --git a/unpack-trees.c b/unpack-trees.c
index 11c37fbc..9238308f 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -625,7 +625,7 @@ static struct cache_entry *create_ce_entry(const struct 
traverse_info *info, con
        ce->ce_mode = create_ce_mode(n->mode);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = len;
-       hashcpy(ce->sha1, n->oid->hash);
+       oidcpy(&ce->oid, n->oid);
        make_traverse_path(ce->name, info, n);
 
        return ce;
@@ -1287,7 +1287,7 @@ static int same(const struct cache_entry *a, const struct 
cache_entry *b)
        if ((a->ce_flags | b->ce_flags) & CE_CONFLICTED)
                return 0;
        return a->ce_mode == b->ce_mode &&
-              !hashcmp(a->sha1, b->sha1);
+              !oidcmp(&a->oid, &b->oid);
 }
 
 
@@ -1393,7 +1393,7 @@ static int verify_clean_subdirectory(const struct 
cache_entry *ce,
                /* If we are not going to update the submodule, then
                 * we don't care.
                 */
-               if (!hashcmp(sha1, ce->sha1))
+               if (!hashcmp(sha1, ce->oid.hash))
                        return 0;
                return verify_clean_submodule(ce, error_type, o);
        }
@@ -1665,7 +1665,7 @@ static void show_stage_entry(FILE *o,
                fprintf(o, "%s%06o %s %d\t%s\n",
                        label,
                        ce->ce_mode,
-                       sha1_to_hex(ce->sha1),
+                       oid_to_hex(&ce->oid),
                        ce_stage(ce),
                        ce->name);
 }
--
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