Is the material ripped or is it just the sewing? If its the sewing then restitch it the best you can. If its torn then I'd use as wide of black cloth gaff tape as I could get my hands on for the outside and if needed then restitch threw the tape. Inside I'd use a aluminum or foil tape, then i'd further protect that with clear packing tape. If the inside material is intake I'd use clear packing tape again. Good luck!