As Tim pointed out, Disarchive disassembly is not fully deterministic
and/or might change a bit over time as Disarchive evolves, and that’s
prolly what we’re seeing here.

The admins among us can see the remaining files in
/gnu/disarchive.ngyro.com on berlin.  That directory also contains two
files: ‘files-present-in-both-yet-different.txt’ and
‘files-that-were-missing.txt’.

Kudos to Timothy for making it possible.

Feedback welcome!

Ludo’.

¹ https://lists.gnu.org/archive/html/guix-devel/2021-10/msg00060.html

² Some of these showed up at disarchive.ngyro.com since I copied the
  database ~16h ago.  Example missing entry is “samplv1-0.9.24.tar.gz”:
  <https://disarchive.ngyro.com/sha256/ff0bfbaacfb514cb1a0194b0a43ca121f7679640a293f907fb1bbb2640d373b0>.