$ git clone -n https://src.fedoraproject.org/rpms/R-data.table.git /var/lib/mock/f31-build-113932-34427/root/chroot_tmpdir/scmroot/R-data.table
Cloning into '/var/lib/mock/f31-build-113932-34427/root/chroot_tmpdir/scmroot/R-data.table'...
$ git reset --hard a2b7ccd37238831880d175cb8c504857c282f6ac
HEAD is now at a2b7ccd - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild