>I went back and explicitly told ChatGPT not to resolve details that didn’t exist in the file.

I don't know what the author thinks this could have meant, other than "give me the original". Making up details is what he is asking it to do.

True, you can't see the eyebrows in the original, but you also can't see (IMO) an absence of eyebrows and since far more people have eyebrows than not, I would be extremely surprised if it had come up with a version without them.