The should provide same upon check in at SYD.
If they don't do this proactively, ask for one.
That should help with their training.I was planning on checking in at the Premium Lounge entrance in Sydney for my SYD-MEL flight which presents another challenge, getting access when you are unable to do OLCI for an itinerary that involves an international sector. Last time I did this I the staff at the Premium Lounger entrance were a bit perplexed in that I didn't have a BP.
That should help with their training.
Earlier this year I flew MEL-xSYD-AUH and used the "International Connections" check-in at MEL T3. [One agent was training another in the nuances of this, so I heard it all explained.]
I was handed a cardboard folder containing my BP's, a tear-off coupon for the T-Bus at SYD and a VA express pass to use at SYD.