Check out sailfishOS. Not a fork of android but you can get andorid app support on it. You can even get microg on it and use the banking apps (worked for me). T

Check out sailfishOS. Not a fork of android but you can get andorid app support on it. You can even get microg on it and use the banking apps (worked for me). The problem is that, officially, they support only a small number of sony models.