$ git clone -n https://src.fedoraproject.org/rpms/R-base64enc.git /var/lib/mock/f31-build-76652-31436/root/chroot_tmpdir/scmroot/R-base64enc
Cloning into '/var/lib/mock/f31-build-76652-31436/root/chroot_tmpdir/scmroot/R-base64enc'...
$ git reset --hard 777024d74e683b7b51af806b0fa7809ea49649e1
HEAD is now at 777024d - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild