Obviously musk doesn't have time to review it all... But saying 'print out a couple of pages of your recent code you are proud of and bring it to a review with your tech lead' is a good way to discuss coding style.
The 'you are proud of' is key to this working though - all your code is visible in the VCS anyway, but asking you to pick a good bit to discuss seems valuable.
Obviously musk doesn't have time to review it all... But saying 'print out a couple of pages of your recent code you are proud of and bring it to a review with your tech lead' is a good way to discuss coding style.
The 'you are proud of' is key to this working though - all your code is visible in the VCS anyway, but asking you to pick a good bit to discuss seems valuable.