$ git clone -n https://src.fedoraproject.org/rpms/R-RcppCCTZ.git /var/lib/mock/f31-build-76444-31415/root/thebuilddir/tmp/scmroot/R-RcppCCTZ
Cloning into '/var/lib/mock/f31-build-76444-31415/root/thebuilddir/tmp/scmroot/R-RcppCCTZ'...
$ git reset --hard 6dbf020c314a5424b4ac3a9d3f0e2af351e4133a
HEAD is now at 6dbf020 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild