To add the apt repo:
wget -q -O- https://raw.githubusercontent.com/ak-rex/ClockworkPi-apt/main/debian/KEY.gpg | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/ak-rex.gpg
sudo add-apt-repository -y "deb [arch=arm64] https://raw.githubusercontent.com/ak-rex/ClockworkPi-apt/main/debian stable main"