Method updateHead

lib/Repository.js:404–409

* Update a ref * @see https://developer.github.com/v3/git/refs/#update-a-reference * @param {string} ref - the ref to update * @param {string} commitSHA - the SHA to point the reference to * @param {boolean} force - indicates whether to force or ensure a fast-forward update * @pa

(ref, commitSHA, force, cb)

    * @return {Promise} - the promise for the http request
    */
   updateHead(ref, commitSHA, force, cb) {
      return this._request('PATCH', `/repos/${this.__fullname}/git/refs/${ref}`, {
         sha: commitSHA,
         force: force,
      }, cb);
   }

   /**
    * Update commit status