Re: [PATCH v8 3/3] submodule add: If --branch is given, record it in .gitmodules

> From: "W. Trevor King" <wking@tremily.us>
>
> This allows you to easily record a submodule.<name>.branch option in
> .gitmodules when you add a new submodule.  With this patch,
>
>   $ git submodule add -b <branch> <repository> [<path>]
>   $ git config -f .gitmodules submodule.<path>.branch <branch>
>
> reduces to
>
>   $ git submodule add -b <branch> <repository> [<path>]
>
> This means that future calls to
>
>   $ git submodule update --remote ...
>
> will get updates from the same branch that you used to initialize the
> submodule, which is usually what you want.