Easy enough to cut along imprint lines (is it imprinted as cobbles or pavers? But it will be min 100mm thick so if you cut it into large pieces they will be extremely heavy and difficult to move. Would have thought not too hard to just cut a couple of holes within the pattern then when done pour new concrete in and colour match/re-imprint to match.
The harder part is finding where the leak is - could be anywhere?
If the driveway is quite new you should be able to get close and the difference will fade over time.
It looks like pavers. Yeah it would be super heavy, I doubt a person could lift them. You'd never be able to match the pattern or color unfortunately, but yeah over time probably less obvious.
Is the leak on the house side of the toby or the street side?
If it's on the street side the convention is (or used to be) that it's the councils responsibility to repair and reinstate. Those are the rules where I live anyway.
Certainly you can't patch concrete without it being obvious it has been patched - even little things like matching colour/aggregates etc are all but impossible. You normally need to re-pour the panel.
Toby side, our responsibility. There's not really panels, it was one long pour, but it does have cut lines every few meters.