Undo.undoRedoPerformed

public static Undo.UndoRedoCallback undoRedoPerformed ;

Description

Callback that is triggered after an undo or redo was executed.

using UnityEditor;
using UnityEngine;

public class ExampleScript : MonoBehaviour
{
    void Start()
    {
        Undo.undoRedoPerformed += MyUndoCallback;
    }

    void MyUndoCallback()
    {
        // some code here
    }
}