On Wed, Aug 11, 2021 at 03:02:52PM +0200, Son Luong Ngoc wrote: > git/t% GIT_TEST_FAIL_PREREQS=1 ./t5607-clone-bundle.sh > [...] > # if ! test_have_prereq SHA1 > # then > # echo "@object-format=sha256" > # fi >expect && The problem is presumably here. If test_have_prereq lies and say "no, we are using sha256" then we cannot expect what the built binary does to match that lie. Perhaps that is a sign that test_have_prereq is not the right tool to check "which hash format are we using", but I don't think we have another convenient mechanism to do so currently. I also think that the FAIL_PREREQS system may be mis-designed a bit. We had a similar problem a few months ago, and I think Junio's response here points in a good direction: https://lore.kernel.org/git/xmqqblbgrwkg.fsf@gitster.g/ -Peff