Code review comment for lp:~parthm/bzr/no-chown-if-bzrlog-exists

I think this is an improvement. However my experience with race conditions is that we always, eventually, run into them.

So I'd like a new bug filed saying that we have this race and should fix it. That can be a wishlist bug, but we know the defect exists so lets capture the thinking about it now to save a future user having to figure it out.