$ git clone -n https://src.fedoraproject.org/rpms/f32-backgrounds.git /var/lib/mock/f40-build-2663515-67007/root/chroot_tmpdir/scmroot/f32-backgrounds
Cloning into '/var/lib/mock/f40-build-2663515-67007/root/chroot_tmpdir/scmroot/f32-backgrounds'...
$ git fetch origin 63d227ef2336ffdac16ad334b3799f4813843cdf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/f32-backgrounds
 * [new ref]         63d227ef2336ffdac16ad334b3799f4813843cdf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63d227e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild