Debian Support

I am trying to sync release focal-security with components main universe non-free from http://security.ubuntu.com/ubuntu/. This fails because the Release-file defines some architecture-files that are not present. According to https://wiki.debian.org/DebianRepository/Format#Architectures , architectures that are defined but not present, should be regarded as present but empty.

However, I am unsure if this also applies here, because here the Architectures are defined and even hashes for the Index files are defined, but are missing in the directory-structure. Persumably Ubuntu does this to not have to re-sign the Release-files.

  error:
    traceback: |2
        File "/usr/lib/python3.6/site-packages/rq/worker.py", line 883, in perform_job
          rv = job.perform()
        File "/usr/lib/python3.6/site-packages/rq/job.py", line 657, in perform
          self._result = self._execute()
        File "/usr/lib/python3.6/site-packages/rq/job.py", line 663, in _execute
          return self.func(*self.args, **self.kwargs)
        File "/usr/local/lib/python3.6/site-packages/pulp_deb/app/tasks/synchronizing.py", line 106, in synchronize
          DebDeclarativeVersion(first_stage, repository, mirror=mirror).create()
        File "/usr/local/lib/python3.6/site-packages/pulpcore/plugin/stages/declarative_version.py", line 148, in create
          loop.run_until_complete(pipeline)
        File "/usr/lib64/python3.6/asyncio/base_events.py", line 484, in run_until_complete
          return future.result()
        File "/usr/local/lib/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 225, in create_pipeline
          await asyncio.gather(*futures)
        File "/usr/local/lib/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 43, in __call__
          await self.run()
        File "/usr/local/lib/python3.6/site-packages/pulp_deb/app/tasks/synchronizing.py", line 286, in run
          raise NoPackageIndexFile(relative_dir=relative_dir)
    description: No suitable Package index file found in 'dists/focal-security/main/binary-armhf'.