I can confidently say this identifies to Clematis genus and one of potentially three indigenous species there in Dorrigo region (NSW).
Does this plant have any mature parts or is this a young, small, plant yet to reach maturity.
To identify which of these three spp. we require information from mature plants, including their leaves and flowers, and if possible as well ripe fruiting parts.
For the time beiong, pending your reply, I will add the suggested identification of Clematis (genus).