Copied to cold storage:
. torrent? magnet:?xt=urn:btih:7b29766367c09d5d75abe98e2ee35c0b70713c3b
. where? zb, offline /ipfs/Qmbb6ybngQBPGXU8kioqFxs6XsBos7hoodBSK6Ft1eAyJY  2024-03-31T02:23:46.137552654Z
. note? "MLP DVD Season 4 / YayPonies" - torrent comment
and
. torrent? magnet:?xt=urn:btih:23e3a1d80ce3a6a2f23530eb869fcced336fc32f
. where? zb, offline /ipfs/QmbJ6z5HXMRDZ42MwpXZZ922uTivt8mUTZivRj6JrmEJmY  2024-03-31T02:55:04.596278158Z
. note? "JUNKDVD / MLPFIM Season 2 Pack Disk 3 of 4 / DVD9 / NO DERPY"
and
. mutable source? https://iwiftp.yerf.org/Pony/Website%20archive/Fan-made/www.ponychan.net/extra/
. where? zb, offline /ipfs/QmeYm48Dawm7goEFHsMpCZ1Yif83xG4vA2BSN2mAQiYg3q  2024-03-31T08:09:25.203220113Z
. note? from https://getchan.net/ponychan-archive/ - my small WARC of that: https://web.archive.org/web/20240206000028/https://gateway.pinata.cloud/ipfs/QmTNXUvndxM3RVBwSp4BvbUSv8YTxnWoGT8qxq1NRC7oe8/

 >>/10072/
rsync's --delete worked as expected:
> $ find /dest/4chan.org/gif/4chan_gif_2023_11 | wc -l # 226,797 before, w/lots of empty files
> 226797
> $ utc; rsync -a --delete --info=progress2 /src/4chan.org/gif/4chan_gif_2023_11/ /dest/4chan.org/gif/4chan_gif_2023_11/; utc
> 2024-03-31T02:51:40.544640528Z
>  0 0% 0.00kB/s 0:00:00 (xfr#0, to-chk=0/30375)
> 2024-03-31T08:46:46.593080088Z
> $ find /dest/4chan.org/gif/4chan_gif_2023_11 | wc -l # 30,375 after, took about 6 hours
> 30375