Subject: Reference a submodule branch instead of a commit

From: Jeremy Morton <[email-masked]>
Date: Mon, 03 Oct 2016 19:14:07 +0100

At the moment, supermodules must reference a given commit in each of 
its submodules.  If one is in control of a submodule and it changes on 
a regular basis, this can cause a lot of overhead with "submodule 
updated" commits in the supermodule.  It would be useful of git allows 
the option of referencing a submodule's branch instead of a given 
submodule commit.  How about adding this functionality?

-- 
Best regards,
Jeremy Morton (Jez)