oref0-version fetch upstream (#825)
oref0-version fetch upstream (#825)

* Check OREF0_SRC env for source code location. Check for being behind upstream. Only warn if repo is ahead of local (not local ahead of remote)

* Need to actually git fetch upstream

* Update oref0-version.sh

Clarify error message

PieterGit/oref0,openaps/oref0,PieterGit/oref0,PieterGit/oref0,openaps/oref0,PieterGit/oref0,openaps/oref0,openaps/oref0