$ git clone -n https://src.fedoraproject.org/rpms/lilypond.git /var/lib/mock/f31-build-63259-29337/root/chroot_tmpdir/scmroot/lilypond
Cloning into '/var/lib/mock/f31-build-63259-29337/root/chroot_tmpdir/scmroot/lilypond'...
$ git reset --hard aa63419263542ec684b368e17a07948dcf0d4218
HEAD is now at aa63419 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild