Re: [PATCH v5 2/4] refs: forward and use the reference storage payload

> > BTW, is it possible to have a gitdir string without a slash in it? I
> > guess not if it is absolute, but I didn't look at the caller to see if
> > that is always true. Anyway, I wonder if we should be checking the
> > result of strrchr() here.
> 
> Since this is called during the ref store initialization and that value
> is generally set via:
> 
> 1. `repo->gitdir`: Which is resolved to an absolute path
> 2. `repo->commondir`: Which is user input, can be without slash
> 3. `worktree dir`: Should contain a slash
> 4. `submodule dir`: Should contain a slash
> 5. `refs migration dir`: Should contain a slash
> 
> But even with this, Gits understanding of linked worktrees are that they
> are in a `$gitdir/worktrees/$wt_id`. So it should be safe to do this.
> Nevertheless, I'll add in a check.