I am using GitPython 2.0.2.

While having kill_after_timeout in the pull()
e.g. g.pull(kill_after_timeout=10)

Before the process killing, there were four processes running:

1. git pull
2. git fetch
3. git-remote-http
4. git fetch-pack

After the timeout, (3) and (4) remained.

Should _kill_process() be recursively called like the following?

                    if local_pid.isdigit():
                        _kill_process(local_pid) # is it necessary?
                        child_pids.append(int(local_pid))