Example.cs

using UnityEditor;
using UnityEngine;

[InitializeOnLoad]
internal static class Example
{
    static Example()
    {
        PrefabUtility.prefabInstanceApplying += go =>
        {
            Debug.Log( $"prefabInstanceApplying: {go}", go );
        };

        PrefabUtility.prefabInstanceApplied += go =>
        {
            Debug.Log( $"prefabInstanceApplied: {go}", go );
        };

        PrefabUtility.prefabInstanceReverting += go =>
        {
            Debug.Log( $"prefabInstanceReverting: {go}", go );
        };

        PrefabUtility.prefabInstanceReverted += go =>
        {
            Debug.Log( $"prefabInstanceReverted: {go}", go );
        };

        PrefabUtility.prefabInstanceUnpacking += ( go, mode ) =>
        {
            Debug.Log( $"prefabInstanceUnpacking: {go}, {mode}", go );
        };

        PrefabUtility.prefabInstanceUnpacked += ( go, mode ) =>
        {
            Debug.Log( $"prefabInstanceUnpacked: {go}, {mode}", go );
        };
    }
}