Most tent manufactures will provide a repair kit with the shelter. Fabric, Seam and Pole repair items are usually included.
When I hunt primitive (with Flintlock) I will usually carry a repair kit in my possibles bag just in case I pop a stitch. My Buddy Buffalo Bill S, is handy with fur and hide and is always fixin something up for me. He gifted me a really neat sewing wallet made from Elk skin (I think) it's needle proof. He packed it with some over sized needles and raw cordage. The tip of a buck antler completes the look and serves as a thong wrap to secure the wallet. Very cool Bill, Thanks
As a note of interest, I have these "Hand Needles" packed in vacuum glass tubes. I carry two or three just in case I lose the thread pullers in my standard kit. I think their neat.