It looks a lot like our description of Calopompilus affectata (Spider wasp). I don’t know this taxon well & I can’t see enough of the abdomen to confirm the two uppermost segments are orange (though it does appear so on the very right-hand side if you zoom in & look closely). I might see if @MichaelMulvaney can have a look for us.
“Large spider wasp. The forewings are orange with a black apex and a black subapical band. The body, including the head, is covered with a silvery pubescence on a base colour of black, except for the top of the first two abdominal segments which are orange. The appendages - legs and antennae - are orange.”
Orange anntenae - legs and top of abdomen (just visible) are distinctive of this species see https://www.inaturalist.org/posts/24264-australian-calopompilus-species