http://bugs.winehq.org/show_bug.cgi?id=11136
--- Comment #4 from Austin English austinenglish@gmail.com 2008-01-11 18:07:06 --- (In reply to comment #3)
The id on the Commit: line of the patch, I think. e.g. for http://winehq.org/pipermail/wine-cvs/2008-January/039198.html you'd use 7514283d7399d620401ccdbfbf04532a9d71199b
I haven't bisected much, so I could be wrong...
Yes, git bisect will accept the version or the sha1 commit id.