$ git clone -n https://src.fedoraproject.org/rpms/schroedinger-cat-backgrounds.git /var/lib/mock/f40-build-2177113-51093/root/chroot_tmpdir/scmroot/schroedinger-cat-backgrounds
Cloning into '/var/lib/mock/f40-build-2177113-51093/root/chroot_tmpdir/scmroot/schroedinger-cat-backgrounds'...
$ git fetch origin 2e160a3a0329b90ae355807a4ae4552781bb0630:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/schroedinger-cat-backgrounds
 * [new ref]         2e160a3a0329b90ae355807a4ae4552781bb0630 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e160a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild