Have you tried?

Save this as `package-reload.el' and run `emacs --batch -l
package-reload.el':

(defadvice load (before debug)
  (message "(RE)LOADING %s" file))
(defadvice package--reload-previously-loaded (around debug activate)
  (ad-activate 'load)
  ad-do-it
  (ad-deactivate 'load))
;(require 'org)
(let ((temp (make-temp-file "packages" t)))
  (setf package-user-dir temp))
(require 'package)
(package-initialize)
(package-refresh-contents)
(package-install (cadr (assq 'org package-archive-contents)))

I get messages like "(RE)LOADING /tmp/packagesDLaBkh/org-9.6/org-macs".
Doesn't matter if I uncomment that line with "(require 'org)" or not.

Paul



On Mon, 19 Dec 2022 at 00:48, Stefan Monnier <monnier@iro.umontreal.ca>
wrote:

> > Add e.g. `(message "RELOAD %S" (car c))' before the `(load ...)' form in
> > the function, reevaluate it and reinstall any package, e.g.:
>
> When you re-install, the new files's names will be the same as the
> previously loaded ones, so it's the corner case where it happens to work.
>
> But if you start Emacs, load its builtin Org, and then install GNU
> ELPA's Org, I doesn't seem to reload anything.
>
>
>         Stefan
>
>