Download WireGuard for Windows at https://www.wireguard.com/install . This repo is a mirror only. Official repository is at https://git.zx2c4.com/wireguard-windows
Why do you think that https://github.com/rajannpatel/Pi-Hole-on-Google-Compute-Engine-Free-Tier-with-Full-Tunnel-and-Split-Tunnel-Wireguard-VPN-Configs is a good alternative to wireguard-windows