When using `--repo-url=git://codeaurora.org/tools/repo.git
--repo-branch=caf-stable`, you likely need to use a repo launcher
downloaded from codeaurora as well, as it seems the upstream repo launcher
is not compatible with it. I'm not familiar with codeaurora though --
there's a chance you could
1. I have my Ubuntu server 16.04.10 installed which has python 2.7.12 and
3.6.9(I installed it - following procedure referring
https://realpython.com/installing-python/)
2. Installed repo launcher (version 2.5) as per
https://source.android.com/setup/build/downloading (by default I used curl
