$ git clone -n https://src.fedoraproject.org/rpms/spacefm.git /var/lib/mock/f45-build-36256-702/root/chroot_tmpdir/scmroot/spacefm
Cloning into '/var/lib/mock/f45-build-36256-702/root/chroot_tmpdir/scmroot/spacefm'...
$ git fetch origin 8533c3d4dbb46cbc51c3404b0c711fb627a121f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/spacefm
 * [new ref]         8533c3d4dbb46cbc51c3404b0c711fb627a121f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8533c3d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild