It is impossible for them to contain more than just random fragments, the models are too small for it to be compressed enough to fit. Even the fragments that have been found are not exact, the AI is "lossy" and hallucinates.
The examples that have been found are examples of overfitting, a flaw in training where the same data gets fed into the training process hundreds or thousands of time over. This is something that modern AI training goes to great lengths to avoid.