When GameObject is spawned, rotate x 90.

Hello in this code,

 var sandbagText = "SandBags: 0/10";
 public var sandbagPrefab : GameObject;
 public var sandbags : int;
 var canPlaceObject : boolean = true;
 var unitspace : float = 2.0f;
     private var offset : Vector3;
     private var fwd : Vector3;
     private var clone : GameObject;
     var sandbagGUI : GUIText;
  
 function OnTriggerEnter(other : Collider){
  if(other.tag == "Sandbag"){
          sandbags += 1;
          sandbagText = "SandBags: " + sandbags + "/10";
          Destroy(other.gameObject);
      }
     }
     
 function Update(){
 fwd = transform.TransformDirection(Vector3.forward) * unitspace;
         offset = transform.position + fwd - (Vector3.down) * 0;
         if(Input.GetKeyDown(KeyCode.T) && canPlaceObject)
         {
             clone = Instantiate(sandbagPrefab, offset, transform.rotation);
             sandbags = sandbags - 10;
             sandbagText = "SandBag: " + sandbags + "/10";
             
         } 
     
     if(sandbags > 9)
         canPlaceObject = true;
     else if(sandbags <= 9)
           canPlaceObject = false;
           
           sandbagGUI.text = sandbagText; 
 }

What do I add to make it so that when the object spawns it spawns at a rotate of x 90.