fix update-hook-example to work with packed tag references
The update-hook-example used 'test -f' to check the tag present, which
does not work if the checked reference is packed. This check has been
changed to use 'git rev-parse $tag' instead.
Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/howto/update-hook-example.txt b/Documentation/howto/update-hook-example.txt
index 88765b5..a8d3bae 100644
--- a/Documentation/howto/update-hook-example.txt
+++ b/Documentation/howto/update-hook-example.txt
@@ -68,7 +68,7 @@
# - Branches should only be fast-forwarded.
case "$1" in
refs/tags/*)
- [ -f "$GIT_DIR/$1" ] &&
+ git rev-parse --verify -q "$1" &&
deny >/dev/null "You can't overwrite an existing tag"
;;
refs/heads/*)
