$ git clone -n https://src.fedoraproject.org/rpms/python-warlock.git /var/lib/mock/f42-build-side-1-3587755-46935/root/chroot_tmpdir/scmroot/python-warlock
Cloning into '/var/lib/mock/f42-build-side-1-3587755-46935/root/chroot_tmpdir/scmroot/python-warlock'...
$ git fetch origin 7babd45b61f7ff363781077fe1e513609b44866a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-warlock
 * [new ref]         7babd45b61f7ff363781077fe1e513609b44866a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7babd45 2.1.0