怎么会？ rarlab 官方不是就有吗？
https://www.rarlab.com/download.htmrar rr[N] Add data recovery record
这个添加恢复记录就是你想要的吧？
另外，Homebrew 也可以装呀：
nobody@Mac ~ % brew reinstall rar
Warning: You are using macOS 11.0.
We do not provide support for this released but not yet supported version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
released but not yet supported version.
==> Downloading
https://www.rarlab.com/rar/rarosx-5.9.1.tar.gzAlready downloaded: /Users/nobody/Library/Caches/Homebrew/downloads/fdb2cc1e1fa3b659b0fc92139bc9645b2ec844b68df1b1d25c5f956332af6cd1--rarosx-5.9.1.tar.gz
==> Verifying SHA-256 checksum for Cask 'rar'.
==> Installing Cask rar
==> Moving Generic Artifact 'default.sfx' to '/usr/local/lib/default.sfx'.
==> Moving Generic Artifact 'rarfiles.lst' to '/usr/local/etc/rarfiles.lst'.
==> Linking Binary 'rar' to '/usr/local/bin/rar'.
==> Linking Binary 'unrar' to '/usr/local/bin/unrar'.
🍺 rar was successfully installed!
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rar
RAR 5.91 Copyright (c) 1993-2020 Alexander Roshal 25 Jun 2020
Trial version Type 'rar -?' for help
Usage: rar <command> -<switch 1> -<switch N> <archive> <files...>
<@listfiles...> <path_to_extract\>
<Commands>
a Add files to archive
c Add archive comment
ch Change archive parameters
cw Write archive comment to file
d Delete files from archive
e Extract files without archived paths
f Freshen files in archive
i[par]=<str> Find string in archives
k Lock archive
l[t[a],b] List archive contents [technical[all], bare]
m[f] Move to archive [files only]
p Print file to stdout
r Repair archive
rc Reconstruct missing volumes
rn Rename archived files
rr[N] Add data recovery record <---------------------------------------------------------
rv[N] Create recovery volumes
s[name|-] Convert archive to or from SFX
t Test archive files
u Update files in archive
v[t[a],b] Verbosely list archive contents [technical[all],bare]
x Extract files with full path