Is this version of the singleton absolutely safe?

Question

Java

Can you please tell me if this version of the Singleton pattern is safe?
Can it be undermined by reflection, or in some other way?

public class MySingleton implements Cloneable{
    private static MySingleton mySingleton = new MySingleton();

    private MySingleton(){}
    
    public static MySingleton getInstance(){
        return mySingleton;
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return mySingleton;
    }
}