rename-tag - how to

ref: https://stackoverflow.com/questions/1028649/how-do-you-rename-a-git-tag

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

for co-workers

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git fetch --prune --prune-tags