extensions/git/src/model.ts/Model/getRepositoryForSubmodule
class Model:	getRepositoryForSubmodule(submoduleUri: Uri): Repository | undefined {
		for (const repository of this.repositories) {
			for (const submodule of repository.submodules) {
				const submodulePath = path.join(repository.root, submodule.path);

				if (submodulePath === submoduleUri.fsPath) {
					return repository;
				}
			}
		}

		return undefined;
	}