If I remember right, Stargate’s antagonists didn’t build the pyramids, they had them built. By humans. (And even if I don’t remember right, it’s still plausible.)

The question becomes: How much alien tech was needed?

Even in that universe, the answer might be “none”. People can be remarkably resourceful if told “Here are the measurements. Get to it. Or die.”

Yup. The model should be different, but the Egyptians were already well aware of the crane and its usefulness. Picture related:

For further info look for “shadoof”. Those are still used nowadays, not just in Egypt but elsewhere; it’s mostly for liquids but I can picture it being used for other stuff, like sand, lime, and the likes. It wouldn’t work for the main stones but it would be really handy for the cement (check what @VampyreOfNazareth@lemm.ee mentioned).

The pyramids were mostly early cement.
“The stones also had a high water content–unusual for the normally dry, natural limestone found on the Giza plateau–and the cementing phases, in both the inner and outer casing stones, were amorphous, in other words, their atoms were not arranged in a regular and periodic array. Sedimentary rocks such as limestone are seldom, if ever, amorphous.”

And their unique way of walking