A tag is a pointer to a commit, and commits exist independently of branches.
Branches come into play only indirectly:
- At the time of creating a tag, by implying the commit that the tag will point to:
- Not specifying a target for a tag defaults to the current branch‘s most recent commit (a.k.a. HEAD); e.g.:
git tag v0.1.0 # tags HEAD of *current* branch
- Specifying a branch name as the tag target defaults to that branch‘s most recent commit; e.g.:
git tag v0.1.0 develop # tags HEAD of ‘develop‘ branch
- (As others have noted, you can also specify a commit ID explicitly as the tag‘s target.)
为Git branch 打Tag
原文：https://www.cnblogs.com/divl/p/13608739.html
