If your running race tubes(natural rubber) now take it to a good tire shop, preferably one that does large truck and heavy equiptment sales also, and have them fix it
They will probally patch the tube and look at the tire to see if it is damaged enough to nead a boot or patch on the inside so it won't cause another hole in the tube
Make sure they inspect the inside of the tire
If your running the slicks tubeless, like I do, you can have the tire patch on the inside or use a plug as long as it is not torn up on the inside of the tire so bad that the plug won't hold air. If it is not a simple puncture in the tire you can still have it repair with patch on the inside or a boot
your decision
One of the other comments already made where about class racers keeping a plug kit in there tools, I know several class racers that have set SS and stock NHRA class records with plugged tires because they where limited on time to make the back up run at a divisional race when they had the flat