http://bugs.winehq.org/show_bug.cgi?id=35115
--- Comment #5 from Austin English austinenglish@gmail.com --- Those are sha1sums of git commits. The wiki has some info for building wine/git:
http://wiki.winehq.org/GitWine http://wiki.winehq.org/Patching
if you need further hel, please use IRC or the forums though, not bugzilla.