Which Chef-Client-13.6.4 packages are to be used on Ubuntu 16.04. and Ubuntu 18.04. for architecture: s390x?

Which Chef-Client-13.6.4 packages are to be used on Ubuntu 16.04. and Ubuntu 18.04. for architecture: s390x?

As the link: https://downloads.chef.io/chef/stable/13.6.4 does not provide this information.

We don’t support Ubuntu on S390x; the only supported distributions there are RHEL or SuSE.