Paper/nms-patches/PathfinderGoalOwnerHurtTarget.patch

--- a/net/minecraft/server/PathfinderGoalOwnerHurtTarget.java
+++ b/net/minecraft/server/PathfinderGoalOwnerHurtTarget.java
@@ -30,7 +30,7 @@
     }
 
     public void c() {
-        this.e.setGoalTarget(this.b);
+        this.e.setGoalTarget(this.b, org.bukkit.event.entity.EntityTargetEvent.TargetReason.OWNER_ATTACKED_TARGET, true); // CraftBukkit - reason
         EntityLiving entityliving = this.a.getOwner();
 
         if (entityliving != null) {