The clone command in git supports a --config parameter that can be repeated several times on the command line to set multiple config parameters. There is no why to call clone or clone_from with multiple config parameters. What I would like to do is:
Repo.clone_from(url, dir, config='submodule.repo1.update=none', config='submodule.repo2.update=checkout')
This can't be done because there are multiple keywords repeatedly passed to clone. You can't construct a dictionary for the same reason. One solution would be to allow for any string to be passed to to the underlying git process.