Place the Object once using Hit test

Questions
1 
function render(timestamp, frame) {
  const delta = clock.getDelta();
  if (frame) {
    const referenceSpace = renderer.xr.getReferenceSpace();
    const session = renderer.xr.getSession();
    if (hitTestSourceRequested === false) {
      session
        .requestReferenceSpace("viewer")
        .then(function (referenceSpace) {
          return session.requestHitTestSource({ space: referenceSpace });
        })
        .then(function (source) {
          hitTestSource = source;
        });
      session.addEventListener("end", function () {
        hitTestSourceRequested = false;
        hitTestSource = null;
      });
      hitTestSourceRequested = true;
    }
    if (hitTestSource) {
      const hitTestResults = frame.getHitTestResults(hitTestSource);
      if ( hitTestResults.length ) {
        const hit = hitTestResults[0];
        reticle.visible = true;
        reticle.matrix.fromArray(hit.getPose(referenceSpace).transform.matrix);
      } else {
        reticle.visible = false;
      }
    }
  }

  for (const mixer of mixers) mixer.update(delta);
  if (mixer1) { mixer1.update(delta);}
  renderer.render(scene, camera);
}

can some one help me with this ? i want to place the object once in hit test then i want to diable the reticle … so how can i will do it ?