PaperMC/paper-server/nms-patches/net/minecraft/world/entity/IEntityAngerable.patch

--- a/net/minecraft/world/entity/IEntityAngerable.java
+++ b/net/minecraft/world/entity/IEntityAngerable.java
@@ -103,7 +103,7 @@
     default void pacify() {
         this.setLastDamager((EntityLiving) null);
         this.setAngerTarget((UUID) null);
-        this.setGoalTarget((EntityLiving) null);
+        this.setGoalTarget((EntityLiving) null, org.bukkit.event.entity.EntityTargetEvent.TargetReason.FORGOT_TARGET, true); // CraftBukkit
         this.setAnger(0);
     }
 
@@ -113,6 +113,8 @@
 
     void setGoalTarget(@Nullable EntityLiving entityliving);
 
+    boolean setGoalTarget(EntityLiving entityliving, org.bukkit.event.entity.EntityTargetEvent.TargetReason reason, boolean fireEvent); // CraftBukkit
+
     @Nullable
     EntityLiving getGoalTarget();
 }