$ git clone -n https://src.fedoraproject.org/rpms/libcgroup.git /var/lib/mock/f40-build-785222-133823/root/chroot_tmpdir/scmroot/libcgroup
Cloning into '/var/lib/mock/f40-build-785222-133823/root/chroot_tmpdir/scmroot/libcgroup'...
$ git fetch origin aa46e2118aea5a5b65cd50024cb46f7d5b323d29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcgroup
 * [new ref]         aa46e2118aea5a5b65cd50024cb46f7d5b323d29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa46e21 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild