I've already covered tagging a release in git read more here, now what happens if (for some reason) you need to delete the tag?
It's quite easy, first, we'll delete the local version:
Text Snippet:
git tag -d 1.0.0
Now, we need to push that change to the origin:
Text Snippet:
git push origin :refs/tags/1.0.0
Just substitute the '1.0.0' with your tag name!