$ git clone -n https://src.fedoraproject.org/rpms/R-BufferedMatrixMethods.git /var/lib/mock/f31-build-49604-27316/root/chroot_tmpdir/scmroot/R-BufferedMatrixMethods
Cloning into '/var/lib/mock/f31-build-49604-27316/root/chroot_tmpdir/scmroot/R-BufferedMatrixMethods'...
$ git reset --hard 9da6475c639f219ae65a762d4e25ddb26ce26edf
HEAD is now at 9da6475 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild