Staging instance, all changes can be removed at any time

AssertionError (version == p_info.version)

https://sentry.softwareheritage.org/organizations/swh/issues/11110/?referrer=phabricator_plugin

AssertionError: 
  File "swh/loader/package/loader.py", line 649, in load
    res = self._load_release(p_info, origin)
  File "swh/loader/package/loader.py", line 827, in _load_release
    release = self.build_release(
  File "swh/loader/package/pubdev/loader.py", line 169, in build_release
    assert version == p_info.version

Migrated from T4530 (view on Phabricator)