$ git clone -n https://src.fedoraproject.org/rpms/python-factory-boy.git /var/lib/mock/f39-build-1515087-35647/root/chroot_tmpdir/scmroot/python-factory-boy
Cloning into '/var/lib/mock/f39-build-1515087-35647/root/chroot_tmpdir/scmroot/python-factory-boy'...
$ git fetch origin 08f8447520ba4573e254505afdba2b999b19bbf4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-factory-boy
 * [new ref]         08f8447520ba4573e254505afdba2b999b19bbf4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08f8447 Version 3.3.0 (#2223915)