If you have a plumbing supply place nearby or a home improvement type store, look for a product that here in the USA is called "Silicone Stretch and Seal Tape" or "Rescue Tape" that general supply and plumbing places may have.
Here's a link to the product:
http://www.homedepot.com/p/Nashua-Tape-1-in-x-3-33-yd-Stretch-and-Seal-Self-Fusing-Silicone-Tape-in-Black-1208952/100206050This is a self-fusing silicone tape that only sticks to itself - You have to pull it at least 50% longer while applying so that it "activates" and will bond to itself as you wrap it around whatever is left of the hose. Hopefully there is enough left that you can "build" your own replacement hose.
Because this will be under significant pressure, I would do at least a triple wrap around the damaged section of boost hose, going at least 3-4 inches in either direction (or to the end if closer than that) and you should be good for at least a few hundred miles. Don't stomp on the accelerator, and you should make it home decently.