$ git clone -n https://src.fedoraproject.org/rpms/seeker.git /var/lib/mock/f45-build-35813-699/root/chroot_tmpdir/scmroot/seeker
Cloning into '/var/lib/mock/f45-build-35813-699/root/chroot_tmpdir/scmroot/seeker'...
$ git fetch origin 9b99f613ff28e5a9967dcf77de2064d150962fc7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/seeker
 * [new ref]         9b99f613ff28e5a9967dcf77de2064d150962fc7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b99f61 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild