Override back button in navigation stack while keeping appearance of default back button?

Question

How do I override the back button for just one view (not for all the back buttons present in different views) such that on click of the back button, root view controller is

Answer 1

Following Sarasranglt's method of having a transparent button, in objective C, and Pavle Mijatovic's earlier swift version, here is a swift 4 version:

let transparentButton = UIButton()
transparentButton.frame = CGRect(x:0, y:0, width:50, height: 40)
transparentButton.backgroundColor = UIColor.clear
transparentButton.addTarget(self, action:#selector(backAction(sender:)), for:.touchUpInside)
self.navigationController?.navigationBar.addSubview(transparentButton)

and

@objc func backAction(sender:UIButton) {
// Some action
}