# AI Modification Log: Pinned Workflow Actions

Date: 2026-06-29

## Change

- Pinned moving-branch GitHub Actions in X/Y/Z workflows to commit SHAs:
  - `actions/checkout@main` -> `b9e0990d219a03df7633c93f6f005a8fecbcab22`
  - `actions/upload-artifact@main` -> `043fb46d1a93c77aae656e7c1c64a875d1fc6a0a`
  - `easimon/maximize-build-space@master` -> `c28619d8999a147d5e09c1199f84ff6af6ad5794`
  - `klever1988/cachewrtbuild@main` -> `b729f807837dbc3455d02fd35192660d9b662121`
  - `GitRML/delete-workflow-runs@main` -> `6c7cf4852e73c46502ee79494d99f5b504cacc6d`
  - `xopenwrt/s3-upload-github-action@master` -> `3cb775b0a8ea63260fb38ab1e58a3694be6ddb4e`

## Reason

Pinning actions to immutable commits improves workflow reproducibility and reduces supply-chain drift from moving branch references.