code: function (cb) {
        async.map(self._repos, function (repo, repoCb) {
          self._client.gitdata.getReference({
            user: self._repoParts[repo].org,
            repo: self._repoParts[repo].repo,
            ref: branchSrcFull
          }, function (err, res) {
            if (self._checkAndHandleError(err, repo, repoCb)) { return; }
            repoCb(null, {
              repo: repo,
              sha: res.object.sha
            });
          });
        }, cb);
      }
docs: Get the most recent commit of the source branch.