Question

I tagged my master branch with a git tag -a 1.0.0 and I would like to do is reset my master branch with reset --hard to the commit that the tag points to. My questions.

1. How to find out the commit id that a tag points to?
2. How to reset the head of a branch to the commit pointed to by a tag?

Answer 1

You can just pass the tag name to git reset to reset to the commit pointed to by that tag name: git reset --hard 1.0.0.

If you still want the commit hash, you can get it with

git show -s --format=%H 1.0.0^{commit}

(git show 1.0.0 will also do; the above dumps only the commit hash.)