$ git clone -n https://src.fedoraproject.org/rpms/mate-desktop.git /var/lib/mock/f45-build-18059-507/root/chroot_tmpdir/scmroot/mate-desktop
Cloning into '/var/lib/mock/f45-build-18059-507/root/chroot_tmpdir/scmroot/mate-desktop'...
$ git fetch origin 5f153af486a1f151b7c415a40c1349d609f27628:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mate-desktop
 * [new ref]         5f153af486a1f151b7c415a40c1349d609f27628 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f153af Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild