Thank you!
I hand-snapped a broken 12.5 cent Dollar Tree hanger, inserted it into the hole in the string made around half of the broken clip, and more importantly wrapped several lengths of black Gorilla duck tape (heavy duty, the expensive stuff at Home Depot) around it.
Should reduce risk of damage to the hatch as mentioned by another (so I would avoid metals including aluminum). It even still fits in the original holding slot. A black hanger would look better but I didn’t want to break one. Luckily few eyes will ever see this aesthetic abomination - all about the function and not waiting for an overpriced part to come in. I wish Subaru didn’t rip us off on hooks and clips... we love the brand, and they should respect us. Charge us more for the car haha.
Vehicle - 2013 Outback