Function pod_git_clone_url 

pub fn pod_git_clone_url(pod_base: &str, pubkey: &str) -> String

Git clone URL of the per-user pod (matches pod_root_url). solid-pod-rs-git enables clone/push at this URL when git-auto-init is wired by the operator. CF Workers tier cannot serve git — see nostr-rust-forum ADR-089.