$ git clone -n https://src.fedoraproject.org/rpms/python-nikola.git /var/lib/mock/f42-build-side-1-3586039-46913/root/chroot_tmpdir/scmroot/python-nikola
Cloning into '/var/lib/mock/f42-build-side-1-3586039-46913/root/chroot_tmpdir/scmroot/python-nikola'...
$ git fetch origin dfa1cc4523fa61dd0f9cf748eb1a074cd2f64708:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nikola
 * [new ref]         dfa1cc4523fa61dd0f9cf748eb1a074cd2f64708 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfa1cc4 Fix FTBFS, FTI and update to 8.8.3