$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-Atom.git /var/lib/mock/f39-build-1441467-32387/root/chroot_tmpdir/scmroot/perl-XML-Atom
Cloning into '/var/lib/mock/f39-build-1441467-32387/root/chroot_tmpdir/scmroot/perl-XML-Atom'...
$ git fetch origin 1d44b4d73ed45b7eec6a8278da2223ec7c18e8a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-Atom
 * [new ref]         1d44b4d73ed45b7eec6a8278da2223ec7c18e8a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d44b4d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild