Re: [PATCH 1/4] wt-status: read HEAD and ORIG_HEAD via the refdb

> > Are there any other gotchas that we should be thinking about?
>
> Not that I can think of. As you say, a repository with malformed HEAD
> will run into other problems anyway. And `read_ref_full()` would return
> errors if these refs were malformed, which would cause us to exit early
> from anyway. So unless "rebase-merge/amend" and "rebase-merge/orig-head"
> contained the same kind of garbage we'd retain the same behaviour as
> before, and that shouldn't really be happening.
>
> One interesting bit is that we don't set `RESOLVE_REF_READING`, so
> `read_ref_full()` may return successfully even if the ref doesn't exist.
> But in practice this is fine given that the resulting oid would be
> cleared in that case.