Don't know if this would help but when our youngest put a pencil through our awning window which he regretted by the look on his face when he realised what he had done we quickly put a bit of duct tape just finger nail size over the whole and that's done the problem , don't know how big your tear is on the roof but maybe you need to lay it out on the ground and put a bit tape on either side , should give you a temporary fix until someone who has a better idea cones along , 🤔
Craig .