REF is undefined even it is passed in github action build.js

[clearloop]

Problem

https://github.com/gear-tech/gear/actions/runs/7286236014/job/19858315381?pr=3603

Steps

this seems happen on A2-mergeongreen only for now, for the debug logs, it shows the passed env is

 env:
    HEAD_SHA: d7c44036305fe78861475ce6ad756dd1bd59e3cd
    LABEL: A2-mergeoncegreen
    REF: cl/sandbox-deps
    TITLE: chore(sandbox): use sp-wasm-interface-common instead of sp-wasm-interface
    NUMBER: 3603
    REPO: gear-tech/gear

however, still got

TypeError: Cannot read properties of undefined (reading 'startsWith')
    at skip (/home/runner/work/gear/gear/.github/actions/label/build.js:27:28)

Possible Solution

No response

Notes

No response

Relevant Log Output

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[clearloop]

could be a bug of github actions, switch to https://github.com/gear-tech/fork-action later