Replying to self.. not sure if this is the best way.. but it works. I'd like to know if there's a way without defining and calling a macro like this (may be there's a way to use one of the eval-* macros, but I cannot figure out how):
;; Using the correct function for getting inherited Org tags.
(defmacro org-hugo--get-tags-alias ()
"Generate alias to point to the correct fn for getting inherited Org tags."
;; Starting Org 9.2, `org-get-tags' returns all the inherited tags
;; instead of returning only the local tags i.e. only the current
;; headline tags.
;;
https://code.orgmode.org/bzg/org-mode/commit/fbe56f89f75a8979e0ba48001a822518df2c66fe ;; For Org <= 9.1, `org-get-tags' returned a list of tags *only* at
;; the current heading, while `org-get-tags-at' returned inherited
;; tags too.
(if (fboundp #'org--get-local-tags) ;If using Org 9.2+
`(defalias 'org-hugo--get-tags 'org-get-tags)
`(defalias 'org-hugo--get-tags 'org-get-tags-at)))
(org-hugo--get-tags-alias)