def git_checkout(repo_dir, ref, branch=None):
    """Do a git checkout of `ref` in `repo_dir`.

    If branch is specified it should be the name of the new branch.
    """
    command = ['git', 'checkout', '--force']
    if branch:
        command.extend(['-B', '{}'.format(branch)])
    command.append(ref)
    return execute_git_command(command, repo_dir=repo_dir)
def git_checkout ( repo_dir , ref , branch = None ) : command = [ 'git' , 'checkout' , '--force' ] if branch : command . extend ( [ '-B' , '{}' . format ( branch ) ] ) command . append ( ref ) return execute_git_command ( command , repo_dir = repo_dir )
Do a git checkout of `ref` in `repo_dir`.

    If branch is specified it should be the name of the new branch.