$ git clone -n https://src.fedoraproject.org/rpms/python-minimock.git /var/lib/mock/f45-build-31539-652/root/chroot_tmpdir/scmroot/python-minimock
Cloning into '/var/lib/mock/f45-build-31539-652/root/chroot_tmpdir/scmroot/python-minimock'...
$ git fetch origin d2a4d38557125fbc07d2703985ee198eae0e4642:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-minimock
 * [new ref]         d2a4d38557125fbc07d2703985ee198eae0e4642 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2a4d38 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild