My impression from github copilot is that hallucinations are the result of certain true facts having a low likelihood and copilot giving you the most likely answer anyway.

Typically I have a certain library that does things in a very unorthodox and undocumented way and when I ask copilot for an example it gives me wonderful, totally understandable code of made up functions that I wouldnt need in the first place if the library worked that way.

I dont think that running that query multiple times would help.