$ git clone -n https://src.fedoraproject.org/rpms/build-constraints-rpm-macros.git /var/lib/mock/f40-build-2274898-55039/root/chroot_tmpdir/scmroot/build-constraints-rpm-macros
Cloning into '/var/lib/mock/f40-build-2274898-55039/root/chroot_tmpdir/scmroot/build-constraints-rpm-macros'...
$ git fetch origin 999b0a28e74438bac65a435bff02c8dfdd5071b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/build-constraints-rpm-macros
 * [new ref]         999b0a28e74438bac65a435bff02c8dfdd5071b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 999b0a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild