Set the hostname of your printers' pi in sudo raspi-config. This hostname will be used to hardlink the correct files. Your current hostname can be seen by echo ${HOSTNAME}.
Starting from a clean rpi image, issue the following:
git clone git@github.com:fl0r1s/klipper_config.git
cd klipper_config
# optionally checkout a branch
git checkout complete_revamp
# hardlink the files.
./install.sh
You'll have to log in to your github.
cd ~/klipper_config
./upload.sh
The easiest way to update klipper is by using kiauh. Install klipper, moonraker and a frontend.