To make things more complicated, the word "tag" is also overloaded. It can either be just a reference (in git lingo, a "ref") to a commit - just like a branch,

To make things more complicated, the word "tag" is also overloaded. It can either be just a reference (in git lingo, a "ref") to a commit - just like a branch, only differing from it in how the tools treat it; but they can also be "annotated tags" which are pointing to a special tag object which contains some metadata and only then points to a specific commit (or other kind of object...) :)