$ git clone -n https://src.fedoraproject.org/rpms/python-libnacl.git /var/lib/mock/f40-build-2227139-53001/root/chroot_tmpdir/scmroot/python-libnacl
Cloning into '/var/lib/mock/f40-build-2227139-53001/root/chroot_tmpdir/scmroot/python-libnacl'...
$ git fetch origin 457137bc8e9b13c8b65f56e67c473070b7f19a59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-libnacl
 * [new ref]         457137bc8e9b13c8b65f56e67c473070b7f19a59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 457137b Include html documentation