$ git clone -n https://src.fedoraproject.org/rpms/lximage-qt.git /var/lib/mock/f45-build-17815-504/root/chroot_tmpdir/scmroot/lximage-qt
Cloning into '/var/lib/mock/f45-build-17815-504/root/chroot_tmpdir/scmroot/lximage-qt'...
$ git fetch origin de3f86d0e1564fcda786a4fa78d18c2ed537737c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lximage-qt
 * [new ref]         de3f86d0e1564fcda786a4fa78d18c2ed537737c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de3f86d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild