$ git clone -n https://src.fedoraproject.org/rpms/cdrkit.git /var/lib/mock/f40-build-796072-140458/root/chroot_tmpdir/scmroot/cdrkit
Cloning into '/var/lib/mock/f40-build-796072-140458/root/chroot_tmpdir/scmroot/cdrkit'...
$ git fetch origin 3ab8c1e98fbd4b0df4b6e0d37b7a3de660dfdf21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cdrkit
 * [new ref]         3ab8c1e98fbd4b0df4b6e0d37b7a3de660dfdf21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ab8c1e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild