How to fix asyncio.TimeoutError during repository synchronization

Issue

• During repository synchronization, an error like the following occurs in the Dynflow Actions::Pulp3::Repository::Sync action output:

---
pulp_tasks:
...
  error:
    traceback: |2
        File "/usr/lib/python3.6/site-packages/pulpcore/tasking/pulpcore_worker.py", line 272, in _perform_task
          result = func(*args, **kwargs)
        File "/usr/lib/python3.6/site-packages/pulp_rpm/app/tasks/synchronizing.py", line 489, in synchronize
          version = dv.create()
        File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/declarative_version.py", line 151, 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/lib/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 225, in create_pipeline
          await asyncio.gather(*futures)
        File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 43, in __call__
          await self.run()
        File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/artifact_stages.py", line 174, in run
          pb.done += task.result()  # download_count
        File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/artifact_stages.py", line 200, in _handle_content_unit
          await asyncio.gather(*downloaders_for_content)
        File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/models.py", line 89, in download
          download_result = await downloader.run(extra_data=self.extra_data)
        File "/usr/lib/python3.6/site-packages/pulpcore/download/http.py", line 258, in run
          return await download_wrapper()
        File "/usr/lib/python3.6/site-packages/backoff/_async.py", line 133, in retry
          ret = await target(*args, **kwargs)
        File "/usr/lib/python3.6/site-packages/pulpcore/download/http.py", line 256, in download_wrapper
          return await self._run(extra_data=extra_data)
        File "/usr/lib/python3.6/site-packages/pulp_rpm/app/downloaders.py", line 98, in _run
          to_return = await self._handle_response(response)
        File "/usr/lib/python3.6/site-packages/pulpcore/download/http.py", line 210, in _handle_response
          chunk = await response.content.read(1048576)  # 1 megabyte
        File "/usr/lib64/python3.6/site-packages/aiohttp/streams.py", line 380, in read
          await self._wait("read")
        File "/usr/lib64/python3.6/site-packages/aiohttp/streams.py", line 306, in _wait
          await waiter
        File "/usr/lib64/python3.6/site-packages/aiohttp/helpers.py", line 656, in __exit__
          raise asyncio.TimeoutError from None
    description: ''
  worker: "/pulp/api/v3/workers/ebd061c1-cf7d-4b30-811c-a9d97630ee9f/"
...