> > Does for_each_ref() iterate over per-worktree refs (like "bisect", > > perhaps)? > > No.
To be clear: it iterates only over the per-worktree refs for the current worktree. So, if you mark an unreachable commit as "bad" with bisect, then that commit is reachable (and found by ":/") in the enclosing worktree only. With this patch, ":/" now behaves the same way with HEADs, which makes sense to me. Agreed with the above discussion. I can add a test for this.