How can I access the google issue tracker through code?

I just wanted to check if anyone was aware of a way to interact with the google issue tracker through code?

https://issuetracker.google.com

The page requires you to be authenticated (have a valid session cookie). From looking around there use to be an exposed API, but it has now been deprecated.

The only way I can think of would to emulate signing in with a headless browser to get a valid cookie, then making normal requests to the URLs I need to access, but this seems very hacky. I had a thought about possibly seeing if I can authenticate with google OAuth2 like many of their other services accept, but not sure how I would go about doing this. Any ideas anyone?