Setup
    - ensure gh(1) is installed ... for Debian this means installing
      the gh package
    $ cd to-here
    $ gh repo set-default https://github.com/performancecopilot/pcp

Get latest failure files
    $ ./update

Redo latest get
    $ rm -f last_run_id
    $ ./update

Get failure files from a specific QA run
    $ ./update <run_id>

