$ git clone -n https://src.fedoraproject.org/rpms/python-dask.git /var/lib/mock/f41-build-1309775-23503/root/chroot_tmpdir/scmroot/python-dask
Cloning into '/var/lib/mock/f41-build-1309775-23503/root/chroot_tmpdir/scmroot/python-dask'...
$ git fetch origin 108bee32a69ff9c077b60e1a946e809fafb4a6d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dask
 * [new ref]         108bee32a69ff9c077b60e1a946e809fafb4a6d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 108bee3 Disable bootstrap mode