Last winter, during an icestorm and high winds, a six inch thick branch about four feet long broke off one of the trees that shades Miss Tina's workshop in the summer. It dropped like a fat javelin and speared thru the ridge vent at the peak. Sad, as the new roof on that building was just under three years old.

Then, the impact neatly broke the branch off at about six inches above the ridge vent, the other three feet of it's length falling into the snow behind the building. The roof is not easily viewed, so we didn't know about the damage until the boss noticed water damage to the ceiling inside. Investigating the leak revealed the six inch hole in the roof.
I am not allowed on ladders, so with the boss doing the aerials, we put a small tarp over the peak to cover the damage, stop the leaking, and wait for warmer weather. This morning was warmer weather. Working together, my grounded status relegating me to a gofer and advisor; we cut a metal patch to slip under the shingles covering the ridge vent at the hole, effectively plugging the hole. Then, sith a new quart can of roofing tar sealer, Miss T liberally sealed the edges of the shingle, and filled the hole in the ridge thru which the metal patch was, but no longer is, visible. No more problem.
Done and Done