There are a lot in the workshop. However, I don't know if this track was done yet - and please note that the currently available tracks don't have the visual quality of the official Hong Kong track (at least not yet).
But if you had this unofficial clue to break the branch ....
There are some clues that seem official, but besides being few, I think it's very expensive for being one track only
I found this one in Santiago in Rfactor 1