$ git clone -n https://src.fedoraproject.org/rpms/R-haven.git /var/lib/mock/f31-build-77121-31479/root/chroot_tmpdir/scmroot/R-haven
Cloning into '/var/lib/mock/f31-build-77121-31479/root/chroot_tmpdir/scmroot/R-haven'...
$ git reset --hard e2a25239e40212689a1eebe9ebb6c87762e353cf
HEAD is now at e2a2523 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild