$ git clone -n https://src.fedoraproject.org/rpms/mkrdns.git /var/lib/mock/f40-build-2613363-64064/root/chroot_tmpdir/scmroot/mkrdns
Cloning into '/var/lib/mock/f40-build-2613363-64064/root/chroot_tmpdir/scmroot/mkrdns'...
$ git fetch origin 7eaad73d7cb9748b88da6559239960feba23ec0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mkrdns
 * [new ref]         7eaad73d7cb9748b88da6559239960feba23ec0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7eaad73 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild