Nighttime, you can get to 7 tiles away or so. Metal arrows might work. I prefer to just chuck rocks at it. Can take a LOT of rocks (30 isn’t overkill at skill 0) but tends to accomplish the objective.
(Make sure that you’re on the same side of the fence. You can climb chainlink fences by (E)xamining them, or you can take them apart, or Zombie Soldiers may have smashed it down for you already.)