> None of these can be understood if you think that a branch is nothing but a ref. To the contrary - all of these can have "branch" changed to "ref" and they s

> None of these can be understood if you think that a branch is nothing but a ref. To the contrary - all of these can have "branch" changed to "ref" and they still make perfect sense. "ref" is just as much a sequence of commits as "branch" is. Every commit is.