Website instantly downloads File, how to get File programmaticaly?

So basically i want to save a File in the tempDirectory on a Android Mobile App, i know how to get download websites, but this page just redirects to this download instantly and i dont know how to save it! [1]: https://195832.logineonrw-lms.de/calendar/export_execute.php?userid=794&authtoken=0277c0bf2090d88bbaac8b9e901c859146ed4a96&preset_what=all&preset_time=monthnow this is the link, you can try it if you want to

I am using the dio package.