update_tags: switch to use git show-ref

Don't assume refs sit under .git/refs . Use 'git show-ref' instead.

1 files changed, 5 insertions, 2 deletions

diff --git a/update_tags b/update_tags
index 25bc143..31ad8a4 100755
--- a/update_tags
+++ b/update_tags
@@ -2,8 +2,11 @@
 
 git branch -r | egrep 'tags/(|PR)[0-9]' | sed -e 's"tags/\(.*\)"& v\1"' \
   | while read branch tag; do 
-      if [ ! -r .git/refs/tags/$tag ]; then
-        echo "tagging $tag from $branch"
+      if ! git show-ref -q "$tag"; then
+        echo "Tagging $tag from $branch"
         git tag $tag $branch 
+      elif [ `git show-ref -s $branch` != `git show-ref -s $tag` ]; then
+        echo "Updating $tag from $branch"
+        git tag -f $tag $branch
       fi
     done