$ git clone -n https://src.fedoraproject.org/rpms/kde-wallpapers.git /var/lib/mock/f40-build-2292407-56133/root/chroot_tmpdir/scmroot/kde-wallpapers
Cloning into '/var/lib/mock/f40-build-2292407-56133/root/chroot_tmpdir/scmroot/kde-wallpapers'...
$ git fetch origin 6952cc14db1f6af3320395422e0e5a539fa7c194:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kde-wallpapers
 * [new ref]         6952cc14db1f6af3320395422e0e5a539fa7c194 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6952cc1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild