version: add remote tracking information
version: add remote tracking information

This tells us what --repo-rev the user is using.

Bug: https://crbug.com/1164415
Change-Id: Idb6c48e6ca5a4783c529717e6be38266bf7038b0
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/293143
Reviewed-by: Michael Mortensen <668d7528ffdc223b4950b555aea5a48377d73cb0@google.com>
Tested-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@google.com>

GerritCodeReview/git-repo,lipro-yocto/git-repo,couchbasedeps/git-repo,couchbasedeps/git-repo,lewixliu/git-repo,lipro-yocto/git-repo,lewixliu/git-repo,GerritCodeReview/git-repo