$ git clone -n https://src.fedoraproject.org/rpms/rubygem-stomp.git /var/lib/mock/f39-build-1512277-35563/root/chroot_tmpdir/scmroot/rubygem-stomp
Cloning into '/var/lib/mock/f39-build-1512277-35563/root/chroot_tmpdir/scmroot/rubygem-stomp'...
$ git fetch origin 92952eef89cda09bbf39d4462896646909fd6b39:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-stomp
 * [new ref]         92952eef89cda09bbf39d4462896646909fd6b39 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92952ee Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild