What would happen to Palestinians that pretend to be Jewish in Israel ?

Converting to Judaism is not as straight forward as converting to Islam, Christianity, or even Buddhism. The process of becoming Jewish is a bureaucratic process that requires extensive rabbinical supervision.
Are you aware that it’s against the Israeli Law to pretend to be Jewish?
This is actually punishable with up to a year’s imprisonment, and many such cases have been successfully prosecuted in the “only democracy in the Middle East”.
If Palestinians pretend to be Jewish, I would say that the Israeli government would have to revise the definition of ‘’who is a jew.’’