Function gh_tokio_command 

pub(super) fn gh_tokio_command<S: BuildHasher>(
    env: &HashMap<String, String, S>,
) -> Command

A gh spawn for one project’s own work: command’s scrub, the ambient identity removed, then the project’s declared env applied - so a project that declares its own token acts as that project, and one that declares none falls back to gh’s own login rather than silently to the server’s environment.