FixLightMapTiling.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class FixLightMapTiling : MonoBehaviour {
   public GameObject _getLightmapScaleObj;
    public GameObject _setLightmapScaleObj;
    public Vector4 _lightmapScalOffset;
    public int _lightmapIndex;
   void OnDrawGizmos()
    {
        Renderer Lod0 = _getLightmapScaleObj.GetComponent<Renderer>();
        Renderer LodChild = _setLightmapScaleObj.GetComponent<Renderer>();
        _lightmapIndex = Lod0.lightmapIndex;
        _lightmapScalOffset = Lod0.lightmapScaleOffset;
       LodChild.lightmapIndex = _lightmapIndex;
       //Debug.Log(LodChild.lightmapIndex);
        LodChild.lightmapScaleOffset = _lightmapScalOffset;
       //Debug.Log(LodChild.lightmapScaleOffset);
 
   }
}