$ git clone -n https://src.fedoraproject.org/rpms/cepces.git /var/lib/mock/f39-build-1591582-38291/root/chroot_tmpdir/scmroot/cepces
Cloning into '/var/lib/mock/f39-build-1591582-38291/root/chroot_tmpdir/scmroot/cepces'...
$ git fetch origin 576fdbb1de115176c3f8ad6ad19074bf428d3f1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cepces
 * [new ref]         576fdbb1de115176c3f8ad6ad19074bf428d3f1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 576fdbb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild