Chapter 14: The Tragedy - S2-E6
Plot hole: Mando needs to make it to the top of the hill fast (he lost the ever important high ground, but he does not seem to mind). He would have a jetpack, but he left it behind. Now, everyone can be distracted and forget some piece of equipment and realise only a minute later (although it's a huge walk, and he has to climb, you'd think he'd remember right away). The problem is, even if Mando forgot the pack and realised only a minute later, the throwaway comedy intro of episode 2.2 showed that he can remote control the jetpack and call it back to himself.