The install script can be found here.
curl -L -sSf https://raw.githubusercontent.com/killbasa/cli/main/install.sh | sh
Since the program needs to be compiled, Rust is a requirement.
git clone https://github.com/killbasa/cli.git
cargo install --locked --path cli
sudo apt install mingw-w64
rustup target add x86_64-pc-windows-gnu
cargo build --release --target x86_64-pc-windows-gnu