$ git clone -n https://src.fedoraproject.org/rpms/python-django-picklefield.git /var/lib/mock/f45-build-30360-644/root/chroot_tmpdir/scmroot/python-django-picklefield
Cloning into '/var/lib/mock/f45-build-30360-644/root/chroot_tmpdir/scmroot/python-django-picklefield'...
$ git fetch origin b15ef993bcdfa8a73633032ba5a3124b44be8f4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-django-picklefield
 * [new ref]         b15ef993bcdfa8a73633032ba5a3124b44be8f4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b15ef99 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild