code: def initialize_repo(self):
          
  
          logging.info('Repo {} doesn\'t exist. Cloning...'.format(self.repo_dir))
          clone_args = ['git', 'clone']
          if self.depth and self.depth > 0:
              clone_args.extend(['--depth', str(self.depth)])
          clone_args.extend(['--branch', self.branch_name])
          clone_args.extend([self.git_url, self.repo_dir])
          yield from execute_cmd(clone_args)
          yield from execute_cmd(['git', 'config', 'user.email', 'nbgitpuller@example.com'], cwd=self.repo_dir)
          yield from execute_cmd(['git', 'config', 'user.name', 'nbgitpuller'], cwd=self.repo_dir)
          logging.info('Repo {} initialized'.format(self.repo_dir))
docs: Clones repository & sets up usernames.