$ git clone -n https://src.fedoraproject.org/rpms/R-S4Vectors.git /var/lib/mock/f31-build-84960-31581/root/chroot_tmpdir/scmroot/R-S4Vectors
Cloning into '/var/lib/mock/f31-build-84960-31581/root/chroot_tmpdir/scmroot/R-S4Vectors'...
$ git reset --hard b349657c7c79583cf1152077b967f284c71d87dc
HEAD is now at b349657 0.22.0