source ref might be 0000...0000 to delete a branch through git-push,
'git <remote> push :<branch>'. The update hook should not decline this.
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
fi
# --- Check types
-newrev_type=$(git-cat-file -t $newrev)
+# if $newrev is 0000...0000, it's a commit to delete a branch
+if [ -z "${newrev##0*}" ]; then
+ newrev_type=commit
+else
+ newrev_type=$(git-cat-file -t $newrev)
+fi
case "$refname","$newrev_type" in
refs/tags/*,commit)