title: Can someone check I changed the attributes of past git commits?
body: <p>I needed to create a GitHub repo in which every commit had older dates. What I mean by this is that I changed my local computer datetime (to a date in the past), wrote some code and later committed and pushed using that date. Then, I can see in my GitHub repo that the commit dates that appear are the fake ones I had in my local computer when I did the commit and push.</p>
  <p>My question is: is there some way a person can verify I actually faked those dates? I also deleted some commits and pushes (using <code>git reset</code>) and changed the commit's author name using <code>git amend</code>. Is there any way someone can verify I made these changes?</p>
  <p>As far as I know, <code>git log</code> is one of the few ways a person can see the author and dates of each commit (which I successfully changed), but is there any way they can have a change history of a repo?</p>