The browser itself (and by extension, Google) doesn’t track incognito browsing. Once you close an incognito browsing session, there is no way to bring up that history from Chrome. You can always find your downloads of course, even if they are deleted.
That being said, there is another method for getting a glimpse of what websites were accessed from your computer. The DNS cache keeps a record of all the domain names accessed by the computer. Here are the steps to check it.