Ooooh the rubber line.
Ew, no there really isn't a good way to patch that.
A smiliar thing happened on my old subaru once, I ended up folding the rubber line in half, and putting a line clamp on it to keep it from leaking, and basically went without rear brakes to that wheel from Norfolk up to NoVA. I'm not making any claims that this is by any means safe nor am I even advocating doing something similar. But you do what you gotta do and sometimes that means thinking outside of the box.
Best of luck, shame you're not home in Fairfax or I'd offer to swing out and help ya replace it.