$ git clone -n https://src.fedoraproject.org/rpms/R-matrixStats.git /var/lib/mock/f31-build-74028-31067/root/chroot_tmpdir/scmroot/R-matrixStats
Cloning into '/var/lib/mock/f31-build-74028-31067/root/chroot_tmpdir/scmroot/R-matrixStats'...
$ git reset --hard 7c65b70b88a3a7b6851fe90eee168bfac7fef61b
HEAD is now at 7c65b70 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild