$ git clone -n https://src.fedoraproject.org/rpms/R-sys.git /var/lib/mock/f33-build-144175-42894/root/chroot_tmpdir/scmroot/R-sys
Cloning into '/var/lib/mock/f33-build-144175-42894/root/chroot_tmpdir/scmroot/R-sys'...
$ git reset --hard ca7b314480d20f196afe65da7c293103ab59123b
HEAD is now at ca7b314 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild