From google images it looks like this PSU has an IEC C20 male connector on it meaning you would need an IEC C19 end on your cable. C19/20 is a higher amperage version of C13/14 which is what could be considered standard on a normal consumer PSU. Google C19 to whatever plug your 220v outlet needs and you should find the appropriate cable.
It's functionally the same, it's not fake in any way.
It's just a transformer that has 240V across it with a tap in the middle, and we take the two halves of it to make the two 120V lines. Combining the two 120V is really just using the whole transformer.
You'd see exactly the same curve on an oscilloscope.