Before the change ansifilter diffoscope shows non-determinism as:
$ diffoscope '...-ansifilter-2.18' '...-ansifilter-2.18.check'
--- ...-ansifilter-2.18/share/man/man1/ansifilter.1.gz
+++ ...-ansifilter-2.18.check/share/man/man1/ansifilter.1.gz
─ filetype from file(1)
@@ -1 +1 @@
-gzip compressed data, was "ansifilter.1", last modified: Sat Oct 30 13:16:29 2021, max compression, from Unix
+gzip compressed data, was "ansifilter.1", last modified: Sat Nov 6 18:04:36 2021, max compression, from Unix
