code: function(cb) {
              log.log('git reset --hard ' + repoDir);
              git(repoDir, ['reset', '--hard'], function(err, stdout, stderr) {
                  if (err) {
                      log.warn('Unable to reset at ' + repoDir + ":", err.msg);
                  }
                  cb(null, {reset: {stdout: stdout, stderr: stderr}});
              });
          }
docs: Reset.