There are a number of products on the market that will work to fix small tears or holes in the tent the following is selection of some of the more common brands found in outdoor stores.
For small tent fabric tears or holes
For small tent fabric tears or holes, Tenacious Tape is a good fix that is relatively simple. It is self-adhesive and can be trimmed to fit various size tears and holes. Available at REI and other outdoor stores. Red may be hard to find, but it is available at Amazon for under $10 a roll.
For small tears or holes in the travel cover there are a few products on the market that provide a quick and durable repair. The cover is made from PVC, so any advice given should be geared toward PVC fabric repair
Gear Aid Tenacious Tape fabric repair. Available in Black at most outdoor stores and also on Amazon for under $7.
PVC can be patched with PVC patches and Urethane adhesive. If someone is looking for more comprehensive repairs, NRS is a good resource. They have various patches and adhesives with some tutorials as well. https://www.nrs.com/repair/clifton_urethane_adhesive.asp