On Sun, Nov 13, 2011 at 12:27:57PM -0600, Jonathan Nieder wrote: > Though I haven't tested. It would be nice to have an md5git (or even > truncated-sha1-git) program to test this kind of thing with. Fortunately we have such a thing: http://article.gmane.org/gmane.comp.version-control.git/184243 That one actually has 40 bits of hash entropy, so you'd expect to generate 2^20 (about a million) commits before accidentally colliding. If you want an easier experiment, you could truncate it even further. -Peff -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html