$ git clone -n https://src.fedoraproject.org/rpms/python-latexcodec.git /var/lib/mock/f42-build-side-1-3583701-46890/root/chroot_tmpdir/scmroot/python-latexcodec
Cloning into '/var/lib/mock/f42-build-side-1-3583701-46890/root/chroot_tmpdir/scmroot/python-latexcodec'...
$ git fetch origin d1a3e56363ad5ad0844467bd3f3a2950f1529d04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-latexcodec
 * [new ref]         d1a3e56363ad5ad0844467bd3f3a2950f1529d04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d1a3e56 Version 3.0.1