I think I see the logic with the "local knowledge" source tag here, but as I previously discussed with you, that's still not appropriate unless you're mapping information that you know from having seen it in person. For a changeset like this I'd suggest something like adding the URL to the Gitea issue, then hitting Enter, then entering in something like "email correspondence with business owner", which will create a semicolon-separated source tag that other mappers will understand as meaning you're referring to multiple sources.