$ git clone -n https://src.fedoraproject.org/rpms/python-joblib.git /var/lib/mock/f40-build-2167785-50976/root/chroot_tmpdir/scmroot/python-joblib
Cloning into '/var/lib/mock/f40-build-2167785-50976/root/chroot_tmpdir/scmroot/python-joblib'...
$ git fetch origin 748cbe484faaf8e7cb0dedddda7bb805a89510c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-joblib
 * [new ref]         748cbe484faaf8e7cb0dedddda7bb805a89510c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 748cbe4 New upstream source 1.3.2