public function register(Request $request)
    {
        $temp_password = str_random(20);
        $request->request->add(['password' => $temp_password]);
        $this->validator($request->all())->validate();
        event(new Registered($user = $this->create($request->all())));

        $key = env('APP_KEY');

        if (Str::startsWith($key, 'base64:')) {
            $key = base64_decode(substr($key, 7));
        }

        $reset_token = hash_hmac('sha256', Str::random(40), $key);
        DB::table('password_resets')->insert([
           'email' => $request->email,
            'token' => Hash::make($reset_token),
            'created_at' => Carbon::now(),
        ]);
        return $this->registered($request, $user)
            ?: redirect($this->redirectPath());
    }

    protected function registered(Request $request, $user) {
        $user->notify(new UserRegisteredNotification($user));
    }

In UserRegisteredNotification:
public function toMail($notifiable) {
        $pw_reset = DB::table('password_resets')->where('email', $this->user->email)->first();
        return (new MailMessage)
            ...
            ->action('Reset Password', url(config('app.url').route('password.reset', $pw_reset->token, false)))
            ...
    }

In the password reset e-mail, it has the hashed token and so the link doesn't work.

How do I get the pre-hashed token to the Notification class?