Fix updates to respect sync-depth (previously it was only respected
for clone operations). Since the default merge strategy typically
fails when the the depth is not unlimited, use `git fetch` followed
by `git reset --hard`.

X-Gentoo-Bug: 552814
X-Gentoo-Bug-url: https://bugs.gentoo.org/show_bug.cgi?id=552814
---
[PATCH v2] fixes the git reset call to use --quiet when appropriate

 pym/portage/sync/modules/git/git.py | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/pym/portage/sync/modules/git/git.py 
b/pym/portage/sync/modules/git/git.py
index 02eeb16..09257f3 100644
--- a/pym/portage/sync/modules/git/git.py
+++ b/pym/portage/sync/modules/git/git.py
@@ -79,11 +79,26 @@ class GitSync(NewBase):
                '''
 
                git_cmd_opts = ""
-               if self.settings.get("PORTAGE_QUIET") == "1":
+               quiet = self.settings.get("PORTAGE_QUIET") == "1"
+               if quiet:
                        git_cmd_opts += " --quiet"
                if 
self.repo.module_specific_options.get('sync-git-pull-extra-opts'):
                        git_cmd_opts += " %s" % 
self.repo.module_specific_options['sync-git-pull-extra-opts']
-               git_cmd = "%s pull%s" % (self.bin_command, git_cmd_opts)
+               if self.repo.sync_depth is None:
+                       git_cmd = "%s pull%s" % (self.bin_command, git_cmd_opts)
+               else:
+                       # Since the default merge strategy typically fails when
+                       # the depth is not unlimited, use `git fetch` followed 
by
+                       # `git reset --hard`.
+                       remote_branch = portage._unicode_decode(
+                               subprocess.check_output([self.bin_command, 
'rev-parse',
+                               '--abbrev-ref', '--symbolic-full-name', 
'@{upstream}'],
+                               
cwd=portage._unicode_encode(self.repo.location))).rstrip('\n')
+
+                       git_cmd_opts += " --depth %d" % self.repo.sync_depth
+                       git_cmd = "%s fetch %s%s" % (self.bin_command,
+                               remote_branch.partition('/')[0], git_cmd_opts)
+
                writemsg_level(git_cmd + "\n")
 
                rev_cmd = [self.bin_command, "rev-list", "--max-count=1", 
"HEAD"]
@@ -93,6 +108,14 @@ class GitSync(NewBase):
                exitcode = portage.process.spawn_bash("cd %s ; exec %s" % (
                                portage._shell_quote(self.repo.location), 
git_cmd),
                        **self.spawn_kwargs)
+
+               if exitcode == os.EX_OK and self.repo.sync_depth is not None:
+                       reset_cmd = [self.bin_command, 'reset', '--hard', 
remote_branch]
+                       if quiet:
+                               reset_cmd.append('--quiet')
+                       exitcode = subprocess.call(reset_cmd,
+                               cwd=portage._unicode_encode(self.repo.location))
+
                if exitcode != os.EX_OK:
                        msg = "!!! git pull error in %s" % self.repo.location
                        self.logger(self.xterm_titles, msg)
-- 
2.7.4


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