libutf8proc "code signature invalid"

[knh1]

% tmux
dyld[16701]: Library not loaded: '/usr/lib/libutf8proc.2.dylib'
  Referenced from: '/usr/bin/tmux'
  Reason: tried: '/usr/lib/libutf8proc.2.dylib' (code signature invalid (errno=1) sliceOffset=0x00000000, codeBlobOffset=0x000589F0, codeBlobSize=0x000015A0 for '/usr/lib/libutf8proc.2.dylib'), '/usr/local/lib/libutf8proc.2.dylib' (no such file)
zsh: abort      tmux

% dpkg --list --no-pager libutf8proc2
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-============================================================
ii  libutf8proc2   2.5.0-2      iphoneos-arm C library for processing UTF-8 Unicode data (shared library)

% ls -l /usr/lib/libutf8proc.2.dylib
-rwxr-xr-x 1 root wheel 368528 Oct  7  2020 /usr/lib/libutf8proc.2.dylib*

% sha256sum /usr/lib/libutf8proc.2.dylib
8b5dfe8e447051490021c0d598c806d85f584ac1c398ed09ff962cd44bed6376  /usr/lib/libutf8proc.2.dylib

% file /usr/lib/libutf8proc.2.dylib
/usr/lib/libutf8proc.2.dylib: Mach-O 64-bit arm64 dynamically linked shared library, flags:<NOUNDEFS|DYLDLINK|TWOLEVEL|NO_REEXPORTED_DYLIBS>