$ git clone -n https://src.fedoraproject.org/rpms/contractor.git /var/lib/mock/f40-build-2587729-62510/root/chroot_tmpdir/scmroot/contractor
Cloning into '/var/lib/mock/f40-build-2587729-62510/root/chroot_tmpdir/scmroot/contractor'...
$ git fetch origin d148bd720c8ba86478e103ee643556a70726cc6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/contractor
 * [new ref]         d148bd720c8ba86478e103ee643556a70726cc6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d148bd7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild