What i don't understand ?

test.c

#include <stdio.h>

int main(int argc, char **argv) {
  static int count = 0;
  int (*_main)(int, char **) = &main;

  if (count < 1) {
    count++;
    argv[0][6] = '\n';
    _main(argc, argv);
  } else {
    printf("%s", argv[0]);
    return 0;
  }
}