From: Magne Land <>

This can happen when using 'git rebase -i’:
could not detach HEAD

Based on discovering this Stack Overflow discussion:
 Documentation/githooks.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/githooks.txt b/Documentation/githooks.txt
index f877f7b7cd19c..3a4e027d0d175 100644
--- a/Documentation/githooks.txt
+++ b/Documentation/githooks.txt
@@ -166,7 +166,9 @@ worktree.  The hook is given three parameters: the ref of 
the previous HEAD,
 the ref of the new HEAD (which may or may not have changed), and a flag
 indicating whether the checkout was a branch checkout (changing branches,
 flag=1) or a file checkout (retrieving a file from the index, flag=0).
-This hook cannot affect the outcome of 'git checkout'.
+If this hook exits with a non-zero status, 'git checkout' will exit with the
+same status.
 It is also run after 'git clone', unless the --no-checkout (-n) option is
 used. The first parameter given to the hook is the null-ref, the second the


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