Rename tag

git tag new old           # Create a new local tag named `new` from tag `old`.
git tag -d old            # Delete local tag `old`.
git push origin new :old  # Push `new` to your remote named "origin", and delete
                          #     tag `old` on origin (by pushing an empty tag
                          #     name to it).

for co-workers

git fetch --prune --prune-tags