$ git clone -n https://src.fedoraproject.org/rpms/R-sys.git /var/lib/mock/f33-build-294787-55392/root/chroot_tmpdir/scmroot/R-sys
Cloning into '/var/lib/mock/f33-build-294787-55392/root/chroot_tmpdir/scmroot/R-sys'...
$ git reset --hard 8388b0c2086c1fedeada49fed161797341091474
HEAD is now at 8388b0c - Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild