在Java中，如何将对象值复制到新对象并更改数据而不影响另一个引用变量

public @ResponseBody ResponseEntity<UnderwriteResponse> execute(@RequestBody UnderwriteRequest request) {

        UnderwriteRequest requestMasking = maskingData(request);
}






public static UnderwriteRequest maskingData(UnderwriteRequest request) throws CloneNotSupportedException {
    UnderwriteRequest requestMasking = (UnderwriteRequest) request.clone();

    try {
            
            if(request != null) {

                if(request.getRequestBody().getPersonalData().getIdCard() != null && !request.getRequestBody().getPersonalData().getIdCard().isEmpty()) {
            
                        maskIdCard(requestMasking, request);
                
        }
        }catch (Exception e) {
             log.info(e);
    }

    return requestMasking;
}





public static void maskIdCard(UnderwriteRequest requestMasking, UnderwriteRequest request) {
            String maskChar = "X";
            String maskString = StringUtils.repeat( maskChar, 9);
            String idcard = request.getRequestBody().getPersonalData().getIdCard();
                    requestMasking.getRequestBody().getPersonalData().setIdCard(StringUtils.overlay(idcard, maskString, 0, 9));

}



@Getter
@Setter
public class UnderwriteRequest implements Cloneable{


    private RequestHeader requestHeader;
    private RequestBrmsBody requestBrmsBody;
    private RequestBody requestBody;

    private RESPONSE_STATUS status = RESPONSE_STATUS.FAILED;
    private String message;
    
    @Override
    public Object clone() throws CloneNotSupportedException {
        // TODO Auto-generated method stub
        return super.clone();
    }
    
    

    
}