Why would its source code be part of the training corpus? Anything is possible, but it could just as easily be making this up

Edit: actually I want to expand a little bit. This model has had a lot of work put in to ensure "safety" but only in a shallow sense. Real failure modes, like being unable to tell if it is lying about stuff, are ignored. Whether or not it for some reason has it's own source code memorized as part of the weights (which would really be weird), this is definitely a failure because it provides output that cannot be trusted.