"ERROR_CHECKSUM_MISMATCH" is thrown when installing Windows or Mac Server build support because the release manifest declares a stale md5 and size

How to reproduce:
1. Install Unity 6000.5.9f1 on Linux
2. Run the following command:
unity install-modules -e 6000.5.9f1 -m windows-mono --accept-eula -y --non-interactive
3. Observe the results

Expected results: Windows Build Support is installed
Actual results: The install fails on every attempt, including both automatic retries, with "download:ERROR_CHECKSUM_MISMATCH" and "Error: 1 item(s) failed to install."

Reproducible with: 1.0.0-beta.6 (6000.5.9f1)

Reproducible on: Ubuntu 24.04.4 LTS
Not reproducible on: No other environment tested

Note: The published release manifest at https://services.api.unity.com/unity/editor/release/v1/releases?version=6000.5.9f1 declares downloadSize 400136594 and integrity md5-zBqUjyxDZtfQqBFrJOOs1Q== for windows-mono, but the artifact actually served at https://download.unity3d.com/download_unity/b57deb96f08d/MacEditorTargetInstaller/UnitySetup-Windows-Mono-Support-for-Editor-6000.5.9f1.pkg is 400138321 bytes with md5-qH8cE7Pr9gXno4VxpjH7qQ== (downloaded and hashed locally to confirm).
The mismatch affects exactly the .pkg installer modules, while every Linux .tar.xz module matches its manifest byte for byte:
  windows-mono    declared 400136594   actual 400138321    delta +1727
  windows-server  declared 399822511   actual 399824238    delta +1727
  mac-server      declared 1440944474  actual 1440946789   delta +2315
  documentation   declared 470250280   actual 506663895    delta +36413615
  linux-il2cpp, linux-server, webgl, android, ios, mac-mono, visionos, language packs   delta 0
This blocks installing Windows Build Support, Windows Dedicated Server Build Support and Mac Dedicated Server Build Support through the CLI on this editor version.
First lines of error:
{"type":"result","success":false,"command":"install-modules","data":{"failedUids":["windows-mono"],"failures":[

{"uid":"windows-mono","reason":"download:ERROR_CHECKSUM_MISMATCH"}

]},"errors":[\{"code":"INSTALL_FAILED","message":"download:ERROR_CHECKSUM_MISMATCH"}]}