See https://developer.github.com/changes/2019-11-05-deprecated-passwords-and-authorizations-api/#authenticating-using-query-parameters.

Hi @epriestley,

On February 3rd, 2020 at 23:32 (UTC) your application (Phabricator) used an access token (with the User-Agent PhutilGitHubAuthAdapter) as part of a query parameter to access an endpoint through the GitHub API:

https://api.github.com/user

Please use the Authorization HTTP header instead as using the access_token query parameter is deprecated.

Depending on your API usage, we'll be sending you this email reminder once every 3 days for each token and User-Agent used in API calls made on your behalf.
Just one URL that was accessed with a token and User-Agent combination will be listed in the email reminder, not all.

Visit https://developer.github.com/changes/2019-11-05-deprecated-passwords-and-authorizations-api/#authenticating-using-query-parameters for more information.

Thanks,
The GitHub Team

This is likely trivial to change.