Both my Getrag cars balk at letting me go into first gear. I've read that others have the same problem and that it's common to the Getrag.
I usually go to second then first maybe 10-20 feet before coming to a stop, wait until I'm at a dead stop and pull it back to neutral. I keep my foot on the brake, not allowing the car to roll, then most times, when it's time to move, it slides right into first. If it doesn't, I pull it to second then into first. I never sit at a light with the clutch depressed, saving wear on the throwout bearing.