The closest approaching solution is to refresh the page contents with F5. Of course, if you had started typing text in input fields, that will make you lose your text.
Another solution is to turn on Caret browsing by pressing F7, then press Ctrl+Home which makes the caret move at the top of the page. If the first element is located at the first character of the page, it's automatically selected, otherwise press Tab to select the first element. If needed, you may turn off the Caret browsing by pressing F7 again.
This second solution works at least for Edge and Chrome.