Is there any way to stop Cloner

It will probably too late by the time I get an answer but maybe this will help someone else. I am cloning a site in order to redesign it. But after I started the cloning I realized it is going image by image, and there are thousands of images on this site. I think it might run forever and it is increasing my server load. I tried closing the browser. But every time I come back to that site it is still going - image3 copied, image4 copied..... Is there any way to kill this thing?