https://gitlab.com/alex.stanovoy/mipt-rust/-/blob/master/tools/rover/src/submitting/submit.rs
    if !launch_git!(&solutions_repo, "add", ".") {
        bail!("git add failed");
    }
    if !launch_git!(&solutions_repo, "commit", "-m", message) {
        bail!("git commit failed: either no changes since the last commit or git failed")
    }
    if !launch_git!(&solutions_repo, "push")
        && !launch_git!(
            &solutions_repo,
            "push",
            "--set-upstream",
            "origin",
            problem.branch_name()
        )
    {
        bail!("git push failed")
    }
https://gitlab.com/alex.stanovoy/mipt-rust/-/blob/master/tools/rover/src/util/util_macro.rs
    #[macro_export]
    macro_rules! launch_git {
        ($workdir: expr, $($arg: expr),+) => {{
            let mut cmd = process::Command::new("git");
            cmd.current_dir($workdir);
            $(cmd.arg($arg);)*
            cmd.status()?.success()
        }};
    }