You can clone with
HTTPS or Subversion.
User on HN made a good point: http://news.ycombinator.com/item?id=3421809
Should only appear when clicked-through from solved-flash (and the same problem should be populated in both views), if user is just visiting solutions to a given problem display as usual.
Is this issue still up for grabs? I have some spare time and wouldn't mind tackling this one.