ak-rex's ClockworkPi kernel repository
To add repo:
wget -q -O- https://raw.githubusercontent.com/ak-rex/ClockworkPi-apt/main/bookworm/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/bookworm stable main"
to get the bleeding edge kernel also add this repo
sudo add-apt-repository -y "deb [arch=arm64] https://raw.githubusercontent.com/ak-rex/ClockworkPi-apt/main/bleeding bleeding main"