$ git clone -n https://src.fedoraproject.org/rpms/stockfish.git /var/lib/mock/f40-build-2560256-62118/root/chroot_tmpdir/scmroot/stockfish
Cloning into '/var/lib/mock/f40-build-2560256-62118/root/chroot_tmpdir/scmroot/stockfish'...
$ git fetch origin 9aae5cdea517cd9bbe68786d49e425f4020cbd42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stockfish
 * [new ref]         9aae5cdea517cd9bbe68786d49e425f4020cbd42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9aae5cd On EPEL9 (and future EPEL10, etc.), use x86_64v2 baseline