Yes, you can see the code here:
https://github.com/bigskysoftware/htmx/blob/24e6d5d7c15e34c9...
We bind `fetch` in the `ctx` object to the standard `windw.fetch` but you can replace it with whatever you want (for example in the `htmx:before:request` event triggered immediately afterwards)
Pretty much everything is swappable using this technique.
