I made a bullet hole, but I don't want the bullet hole to show up in the characters. How do I do that?

In my multiplayer game, I want bullet holes to appear only on the objects of the map. How could I do that? Here's the code:

using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class SingleShotGun : Gun
{
[SerializeField] Camera cam;

 PhotonView PV;

 void Awake()
 {
     PV = GetComponent<PhotonView>();
 }

 public override void Use()
 {
     Shoot();
 }

 void Shoot()
 {
     Ray ray = cam.ViewportPointToRay(new Vector3(0.5f, 0.5f));
     ray.origin = cam.transform.position;
     if(Physics.Raycast(ray, out RaycastHit hit))
     {
         hit.collider.gameObject.GetComponent<IDamageable>()?.TakeDamage(((GunInfo)itemInfo).damage);
         PV.RPC("RPC_Shoot", RpcTarget.All, hit.point, hit.normal);
     }
 }

 [PunRPC]
 void RPC_Shoot(Vector3 hitPosition, Vector3 hitNormal)
 {
     Collider[] colliders = Physics.OverlapSphere(hitPosition, 0.3f);
     if(colliders.Length != 0)
     {
         GameObject bulletImpactObj = Instantiate(bulletImpactPrefab, hitPosition + hitNormal * 0.001f, Quaternion.LookRotation(hitNormal, Vector3.up) * bulletImpactPrefab.transform.rotation);
         Destroy(bulletImpactObj, 10f);
         bulletImpactObj.transform.SetParent(colliders[0].transform);
     }
 }

}