The [[ https://www.mediawiki.org/wiki/Extension:OAuth | MediaWiki OAuth extension ]] allows a MediaWiki wiki acting as an OAuth provider, which can be used by third-party apps to login with an account on the MediaWiki site.
If a user is redirected to the login page to login, as they might not be logged in to an account on the wiki site already. Then these users might miss some context why they need to login to a completely different page then they originally were.
This task is about adding an informational message to the login page, out of the OAuth extension, which shortly explains why the user needs to log in here.
Extension repository: https://gerrit.wikimedia.org/g/mediawiki/extensions/OAuth
Learn more about Git, Gerrit and how to submit a patch: https://www.mediawiki.org/wiki/Gerrit/Tutorial