Unable to determine current hash with `git rev-parse HEAD`

I’m having this error when I activate temporaryPublicStorage: true.

This is the run: https://github.com/frontity/frontity/pull/244/checks?check_run_id=339869140

And this is the workflow job:

  lighthouse:
    runs-on: ubuntu-latest
    needs: deploy

    steps:
      - name: Audit URLs using Lighthouse
        uses: treosh/lighthouse-ci-action@v2
        with:
          temporaryPublicStorage: true
          urls: |
            https://mars-theme-frontity.worona.now.sh/
            https://mars-theme-frontity.worona.now.sh/2016/the-beauties-of-gullfoss/

By looking at the specific line that throws the error: https://github.com/GoogleChrome/lighthouse-ci/blob/master/packages/utils/src/build-context.js#L54 it looks like lighthouse is trying to use git rev-list -n1 HEAD to get the commit hash.

Just before that, it looks for some environment variables. I have solved the issue adding the env LHCI_BUILD_CONTEXT__CURRENT_HASH populated with ${{ github.sha }}.

I’m not sure why I am having this problem, but in case you can reproduce it, maybe this package should add the LHCI_BUILD_CONTEXT__CURRENT_HASH env variable by default:

env:
  LHCI_BUILD_CONTEXT__CURRENT_HASH: ${{ github.sha }}

[milewski]

Actually, I figured it out…

Looking at the log for checkout@v2 I saw this:

As I’m using a self-hosted runner I had an old version of git… upgrading it… now there is indeed a .git folder in my root directory and everything works as expected.

[alekseykulikov]

Related LHCI issue: https://github.com/GoogleChrome/lighthouse-ci/issues/151