You can clone with
HTTPS or Subversion.
Some examples are broken or seem unmaintained. There should be a representative set of examples, showing off pyjs' capabilities, demonstrating what it feels like coding in pyjs, and explaining / solving commonly asked questions. These should look nice, feel good using them, and it should be easy to navigate through them.
1.) Clustering the existing examples would help to think of a new structure:
2.) Consolidate the examples in each cluster (e.g. find out which examples can be turned into a single "great example")
3.) Each example should provide a (good) title, a short explanation, a working demo (of course!), and an easy way to see the full source code. The "Showcase" is a good - though unstyled - example. (GWT's Showcase looks a little bit less old-fashioned: https://developers.google.com/web-toolkit/examples/)
I see no button to assign this to myself. I'll volunteer to work on this issue, if someone wants to assign it to me, or tells me how to assign it myself.
For now, I'll let GWT showcase be my inspiration, as well as the structure proposed above.
Some hints on a new version 0.2 of the Asteroids example: pyjs/pyjs#755 (comment)