$ git clone -n https://src.fedoraproject.org/rpms/cxxopts.git /var/lib/mock/f40-build-2342132-59811/root/chroot_tmpdir/scmroot/cxxopts
Cloning into '/var/lib/mock/f40-build-2342132-59811/root/chroot_tmpdir/scmroot/cxxopts'...
$ git fetch origin a23789115a0bcbdaa56e3c6a36c74990afd0a988:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cxxopts
 * [new ref]         a23789115a0bcbdaa56e3c6a36c74990afd0a988 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a237891 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild