$ git clone -n https://src.fedoraproject.org/rpms/fedora-workstation-backgrounds.git /var/lib/mock/f41-build-side-1-2811326-32929/root/chroot_tmpdir/scmroot/fedora-workstation-backgrounds
Cloning into '/var/lib/mock/f41-build-side-1-2811326-32929/root/chroot_tmpdir/scmroot/fedora-workstation-backgrounds'...
$ git fetch origin a64328e767102c3f1734b29c8de090ccfcdfed83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fedora-workstation-backgrounds
 * [new ref]         a64328e767102c3f1734b29c8de090ccfcdfed83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a64328e Correct SPDX license