Interface to `git-branch(1)`_

    cwd
        The path to the git checkout

    name
        Name of the branch on which to operate. If not specified, the current
        branch will be assumed.

    opts
        Any additional options to add to the command line, in a single string

        .. note::
            To create a branch based on something other than HEAD, pass the
            name of the revision as ``opts``. If the revision is in the format
            ``remotename/branch``, then this will also set the remote tracking
            branch.

            Additionally, on the Salt CLI, if the opts are preceded with a
            dash, it is necessary to precede them with ``opts=`` (as in the CLI
            examples below) to avoid causing errors with Salt's own argument
            parsing.

    git_opts
        Any additional options to add to git command itself (not the ``branch``
        subcommand), in a single string. This is useful for passing ``-c`` to
        run git with temporary changes to the git configuration.

        .. versionadded:: 2017.7.0

        .. note::
            This is only supported in git 1.7.2 and newer.

    user
        User under which to run the git command. By default, the command is run
        by the user under which the minion is running.

    password
        Windows only. Required when specifying ``user``. This parameter will be
        ignored on non-Windows platforms.

      .. versionadded:: 2016.3.4

    ignore_retcode : False
        If ``True``, do not log an error to the minion log if the git command
        returns a nonzero exit status.

        .. versionadded:: 2015.8.0

    output_encoding
        Use this option to specify which encoding to use to decode the output
        from any git commands which are run. This should not be needed in most
        cases.

        .. note::
            This should only be needed if the files in the repository were
            created with filenames using an encoding other than UTF-8 to handle
            Unicode characters.

        .. versionadded:: 2018.3.1

    .. _`git-branch(1)`: http://git-scm.com/docs/git-branch

    CLI Examples:

    .. code-block:: bash

        # Set remote tracking branch
        salt myminion git.branch /path/to/repo mybranch opts='--set-upstream-to origin/mybranch'
        # Create new branch
        salt myminion git.branch /path/to/repo mybranch upstream/somebranch
        # Delete branch
        salt myminion git.branch /path/to/repo mybranch opts='-d'
        # Rename branch (2015.8.0 and later)
        salt myminion git.branch /path/to/repo newbranch opts='-m oldbranch'

def branch(cwd,
           name=None,
           opts='',
           git_opts='',
           user=None,
           password=None,
           ignore_retcode=False,
           output_encoding=None):
    '''
    Interface to `git-branch(1)`_

    cwd
        The path to the git checkout

    name
        Name of the branch on which to operate. If not specified, the current
        branch will be assumed.

    opts
        Any additional options to add to the command line, in a single string

        .. note::
            To create a branch based on something other than HEAD, pass the
            name of the revision as ``opts``. If the revision is in the format
            ``remotename/branch``, then this will also set the remote tracking
            branch.

            Additionally, on the Salt CLI, if the opts are preceded with a
            dash, it is necessary to precede them with ``opts=`` (as in the CLI
            examples below) to avoid causing errors with Salt's own argument
            parsing.

    git_opts
        Any additional options to add to git command itself (not the ``branch``
        subcommand), in a single string. This is useful for passing ``-c`` to
        run git with temporary changes to the git configuration.

        .. versionadded:: 2017.7.0

        .. note::
            This is only supported in git 1.7.2 and newer.

    user
        User under which to run the git command. By default, the command is run
        by the user under which the minion is running.

    password
        Windows only. Required when specifying ``user``. This parameter will be
        ignored on non-Windows platforms.

      .. versionadded:: 2016.3.4

    ignore_retcode : False
        If ``True``, do not log an error to the minion log if the git command
        returns a nonzero exit status.

        .. versionadded:: 2015.8.0

    output_encoding
        Use this option to specify which encoding to use to decode the output
        from any git commands which are run. This should not be needed in most
        cases.

        .. note::
            This should only be needed if the files in the repository were
            created with filenames using an encoding other than UTF-8 to handle
            Unicode characters.

        .. versionadded:: 2018.3.1

    .. _`git-branch(1)`: http://git-scm.com/docs/git-branch

    CLI Examples:

    .. code-block:: bash

        # Set remote tracking branch
        salt myminion git.branch /path/to/repo mybranch opts='--set-upstream-to origin/mybranch'
        # Create new branch
        salt myminion git.branch /path/to/repo mybranch upstream/somebranch
        # Delete branch
        salt myminion git.branch /path/to/repo mybranch opts='-d'
        # Rename branch (2015.8.0 and later)
        salt myminion git.branch /path/to/repo newbranch opts='-m oldbranch'
    '''
    cwd = _expand_path(cwd, user)
    command = ['git'] + _format_git_opts(git_opts)
    command.append('branch')
    command.extend(_format_opts(opts))
    if name is not None:
        command.append(name)
    _git_run(command,
             cwd=cwd,
             user=user,
             password=password,
             ignore_retcode=ignore_retcode,
             output_encoding=output_encoding)
    return True