Set clock table duration format for emacs org-mode

You should now use org-duration-format : (setq org-duration-format (quote h:mm)) for your question.

See https://lists.gnu.org/archive/html/emacs-orgmode/2017-02/msg00270.html for explanations.

Apparently you can set the org-time-clocksum-format variable like this:

(setq org-time-clocksum-format (quote (:hours "%d" :require-hours t :minutes ":%02d" :require-minutes t)))