$ git clone -n https://src.fedoraproject.org/rpms/R-BufferedMatrix.git /var/lib/mock/f31-build-96714-32868/root/thebuilddir/tmp/scmroot/R-BufferedMatrix
Cloning into '/var/lib/mock/f31-build-96714-32868/root/thebuilddir/tmp/scmroot/R-BufferedMatrix'...
$ git reset --hard cdf15200fa77ad6285b385a625677bbdd78c58d5
HEAD is now at cdf1520 Remove explicit dependencies provided by automatic dependency generator.