$ git clone -n https://src.fedoraproject.org/rpms/R-rlecuyer.git /var/lib/mock/f31-build-50751-27432/root/thebuilddir/tmp/scmroot/R-rlecuyer
Cloning into '/var/lib/mock/f31-build-50751-27432/root/thebuilddir/tmp/scmroot/R-rlecuyer'...
$ git reset --hard fc73d8526db1100b86d97dc622cd9900727f6db1
HEAD is now at fc73d85 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild