I read a story 2 years ago about an astronaut on Earth who was preparing for his flight that will occur in 2-3 months. He wakes up and sees a guy in full astronaut suit that tries to kill him. The guy is identical to him.
He survives and kills the guy, but half an hour later another astronaut appears trying to stop him. He avoids him and then another one appears.
At the end he is fleeing in his car and thousands of astronauts appear until they stop the car and kill him.
The astronauts were him trying to stop himself because, in the future, he hits a hole in time-continuum while traveling in space.
Does anyone know which short-story is this?