It's not a pure goats weed IMO......The pod is to long and the leaves are to much of a light green for goats weed. It could be a cross
It looks bloody close.
My goats weed pods will go from light green to black to red and they stay in the black state for a long time...and like lots of sun to change them to red...
Could be a goats weed crossed with something like an aussie black???
What ever it is. it's very interesting.