{bug} warning: unable to access 'RelNotes/.gitattributes'

"git repack" started giving the above warning, and I am guessing that the recent 11e50b2 (attr: warn on inaccessible attribute files, 2012-08-21) exposed a bug where we ask stat(2) not lstat(2) by mistake before deciding to append .gitattributes to see if that directory has a per-directory attributes file. We simply used to notice and ignore any failure from open() and moved on, but we started distinguishing between ENOENT and others (in this case, we get ENOTDIR), and added a warning for non-ENOENT cases and I think that is what I am seeing.

It is getting late so I won't dig it further for now, but just a heads up.