goto makes your code jump into a specific line (marked with a label).
However, goto makes your code very hard to read/understand. So I'd advise against it. There are usually better ways to deal with this. E.g. loops:
#include <stdio.h>
int main()
{
printf("No-repeat\n");
for (int i = 0; i < 2; i++)
printf("Repat twice\n");
return 0;
}