JavaScript's session history management using S3 static hosting?

JavaScript's session history management using S3 static hosting?

I am currently developing a website that dominantly uses JavaScript (JS)
history.
Now the problem is, this history uses pathname of the URL. So for example
if I use S3 as static hosting, and for the first time would like to
request a URL like www.example.com/about, the S3 would redirect it to
/about folder instead of loading the root (www.example.com) and have the
JS to handle the /about. Of course, this behavior is absolutely normal in
case of static hosting, so it is tricky.
I am just wondering if it is possible that it would work in my case, using
S3, where every link based on the root (www.example.com/) would always
refer to the root website? In short, I'm expecting S3 would ignore the
pathname at all. So if I request for www.example.com/about, it will load
just the index.html located in www.example.com/index.html, while retaining
the URL (www.example.com/about).
If this is still not clear, think about JS's location.hash (#). Browser
will ignore that hash when making request to the static web server, then
when the web is loaded, the JS contained in it will handle the given hash.
So my case can be exactly solved by using "#" in my URL, but this time I
want to use a clean URL, which is without "#".
Thank you for your help. :)