$ git clone -n https://src.fedoraproject.org/rpms/verne-backgrounds.git /var/lib/mock/f40-build-2094447-50362/root/chroot_tmpdir/scmroot/verne-backgrounds
Cloning into '/var/lib/mock/f40-build-2094447-50362/root/chroot_tmpdir/scmroot/verne-backgrounds'...
$ git fetch origin 1a42943a6183fee414cc4263116e582a4f24aeab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/verne-backgrounds
 * [new ref]         1a42943a6183fee414cc4263116e582a4f24aeab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a42943 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild