$ git clone -n https://src.fedoraproject.org/rpms/boxes.git /var/lib/mock/f31-build-75474-31281/root/chroot_tmpdir/scmroot/boxes
Cloning into '/var/lib/mock/f31-build-75474-31281/root/chroot_tmpdir/scmroot/boxes'...
$ git reset --hard 8811f2fc5fcdbd77a1e62d77437c982f9a79ef0a
HEAD is now at 8811f2f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild