git subrepo pull maint-travis-ci/

    {"local":
      {"subdir":  "sub"
      ,"action":  "pull"}
    ,"remote":
      {"url":     "../a"
      ,"branch":  "master"
      ,"commit":  "c918d719"}
    ,"git-subrepo":
      {"version": "0.1.0"
      ,"commit":  "60aa565"
      ,"origin":  "git@github.com:git-commands/git-subrepo.git"}}