code: function resolveGitRoot(filepath) {
      var relativeToGit, repoId;
  
      // No git repo cloned, or file is not in a git repository
      if (!GIT_TMP || !pathUtil.isInRoot(GIT_TMP, filepath)) return null;
  
      // Extract first directory (is the repo id)
      relativeToGit = path.relative(GIT_TMP, filepath);
      repoId = _.first(relativeToGit.split(path.sep));
      if (!repoId) return;
  
      // Return an absolute file
      return path.resolve(GIT_TMP, repoId);
  }
docs: Return root of git repo from a filepath