On Thu, Mar 2, 2017 at 6:19 AM, Jeff King <peff@xxxxxxxx> wrote: > You have to remember that some of the Git for Windows users are doing > horrific things like using repositories with 450MB .git/index files, and > the speed to compute the sha1 during an update is noticeable there. We probably should separate this use case from the object hashing anyway. Here we need a better, more reliable crc32 basically, to detect bit flips. Even if we move to SHA-something, we can keep staying with SHA-1 here (and with the fastest implementation) -- Duy