class CommandPopenMixin:
    _run_fn = Subprocess.Popen


class CommandRunMixin:
    _run_fn = Subprocess.run

class Command:
    _run_fn = SubprocessCommand




class Command:
    _run_fn = SubprocessCommand

This turns git command into a subprocess command factory:

class Git(Command):
   ...


git_factory = Git(url='...')
status_cmd = git_factory.status()
status_cmd.run()
status_cmd.Popen()

Subprocess.Popen
Subprocess.run