[I couldn't find a more relevant thing to reply to] On Thu, Jul 30 2020, brian m. carlson wrote: > [...] B.t.w. thanks again for all your work on SHA-1 -> SHA-256. I found a missing spot that wasn't trivial to fix, so sending an E-Mail: In git-filter-branch.sh we have: _x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]' _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40" Then later we have a case condition based on matching a SHA-1: $_x40) echo "Ref '$ref' was rewritten" if ! git update-ref -m "filter-branch: rewrite" \ Just deleting that case arm has filter-branch tests passing, so whatever it's meant to do it has zero coverage, which explains why it hasn't broken with our tests. I didn't have time to dig, so sending off this E-Mail instead.