tree fe417400cbb72ced45b9a070a427950687ec7422
parent 6c4d087c87c97399f2f743cca3db9d2c8806ef20
author natalie.chen <natalie.chen@mediatek.com> 1536637507 +0800
committer natalie.chen <natalie.chen@mediatek.com> 1536664824 +0800

create remote upstream branch if not existed

with optimized fetch, remote branch might not be created if no need to fetch.
all kinds of issues are created because of the wrong presumption that remote
branch always exists.
so, just create remote upstream branch if not existed once and for all.

Change-Id: I191ecdb83613e55eb1ef7f0e66d9e0ba57fb234d