Hmmm! He doesn't know Luke too well yet, so if he talks about anything, it'll likely be just scratching the surface while trying to get the focus back on Luke because he's a butt

On the other hand since he now knows Luke is a clone, he might prod a bit about that. He had a lot of health problems that would have ensured he didn't survive to the age of twenty, and human cloning happens to be his area of expertise, so he'd definitely be keeping an eye on Luke to see to it that he's healthy here - and if not, potentially provide help with ways to heal those problems. But I have no idea what Luke's state is regarding that, so!