If I start clock on an item, I can use org-clock-jump-to-current-clock and it always takes me to the current item (from any buffer).

After you clock-out, you cannot jump to current-clock anymore and that makes sense.

But what if I started the timer via org-pomodoro? Then after it clocks out, in order to start another cycle I'd have to:

• open the .org buffer with the task I'm trying to clock
• run org-pomodoro while on the task item

this will add a row to the item's CLOCK drawer (or whatever you have set in org-clock-into-drawer variable)

So the question is:

Is there more efficient way to restart the timer on the last (clocked) item?

Without having to find and open the .org buffer?