$ git clone -n https://src.fedoraproject.org/rpms/R-microbenchmark.git /var/lib/mock/f31-build-74034-31069/root/chroot_tmpdir/scmroot/R-microbenchmark
Cloning into '/var/lib/mock/f31-build-74034-31069/root/chroot_tmpdir/scmroot/R-microbenchmark'...
$ git reset --hard ffd997393c80262e0d19611ffb90c66dcca5908a
HEAD is now at ffd9973 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild