To be honest, not much. Other HSC subjects such as 3/4u maths, Engineering studies cover just as much, if not more, of the content you may encounter in first year uni physics. The mechanics parts of the space topic in HSC Physics comes to mind as something you will see in uni physics.
Besides that it depends on your major, uni or what subjects you end up studying. A lot of the content that may be repeated (i.e. transformers in an EE subject) will usually be covered in ~5-10 minutes in a lecture anyway.