I'm not sure to what extent Kagi tailors the descriptions that appear underneath each search result based on the site of that result, but I don't expect Kagi to include "Contribute to [repository-name] development by creating an account on GitHub" for GitHub results. That's useless information.
I don't see it very often, but it was present in a search result that included the serglider/shake-detector repository, as seen in the screenshot below:

Ideally I only ever want GitHub repositories to have a description from the README or the description field that appears on the right-hand side of the repository contents. Anything else is noise.