git-rename-tag

git-rename-tag.sh

#!/bin/sh

# I think this is run TAG="oldtag" NEWTAG="newtag" sh git-rename-tag.sh
# It should keep the same date, committer and message as the original tag

fmt='
  tagcommit=%(objectname)
  tagname=%(taggername)
  tagemail=%(taggeremail)
  tagdate=%(taggerdate)
  tagmessage=%(contents)

  GIT_COMMITTER_DATE="$tagdate" GIT_COMMITTER_NAME="$tagname" GIT_COMMITTER_EMAIL="$tagemail" git tag -m "$tagmessage" "$NEWTAG" $tagcommit
  git tag -d "$TAG"
'

eval=`git for-each-ref "refs/tags/$TAG" --shell --format="$fmt"`
eval "$eval"