$ git clone -n https://src.fedoraproject.org/rpms/python-nikola.git /var/lib/mock/f40-build-2682485-67964/root/chroot_tmpdir/scmroot/python-nikola
Cloning into '/var/lib/mock/f40-build-2682485-67964/root/chroot_tmpdir/scmroot/python-nikola'...
$ git fetch origin 7b083c2269abb952e3405045a361798ea9f90ab2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nikola
 * [new ref]         7b083c2269abb952e3405045a361798ea9f90ab2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b083c2 Update the spec file to more modern Python guidelines