actions/checkout is checking out the wrong SHA

[jwalton]

Note the SHA at the top of my build:

But this is the output from the end of actions/checkout:

 HEAD is now at c28ff3a5b fix: Use React 16.9.0.
Removed matchers: 'checkout-git'
##[remove-matcher owner=checkout-git]

It seems to be checking out the latest master, instead of the branch I'm actually on. This was working on Saturday.

[jwalton]

Actually, I think perhaps something more fundamental is broken here:

      - run: 'echo Sha is: $SHA'
        env:
          SHA: ${{ github.sha }}

results in:

Sha is:

Where's my sha? O_o

[jwalton]

The default $GITHUB_SHA is also empty.

[nulano]

Even the ref is missing! Running cmd /c "set" on Windows gives:

[...]
GITHUB_BASE_REF=
GITHUB_EVENT_NAME=push
GITHUB_EVENT_PATH=d:\a\_temp\_github_workflow\event.json
GITHUB_HEAD_REF=
GITHUB_REF=
GITHUB_REPOSITORY=nulano/Pillow
GITHUB_SHA=
[...]

This broke about an hour ago.

[nulano]

Reported here as well: https://github.community/t5/GitHub-Actions/GITHUB-REF-and-GITHUB-SHA-no-longer-work/m-p/33283/highlight/true#M1439

[jwalton]

@nulano I beat you to it by a minute, I'm afraid: https://github.community/t5/GitHub-Actions/PSA-GitHub-Actions-are-a-bit-broken-this-morning-missing-SHAs/m-p/33282#M1438 ;)

[TingluoHuang]

ACK

[timruffles]

We have deployed a fix for this. Sorry! 😓 @jwalton how is it looking for you?

[nulano]

Looks OK for me now.

[jwalton]

@timruffles Working for me now! Don't worry, you're still beta, you can break stuff. ;) Thanks for the quick fix!

[rela589n]

It seems that currently it doesn't work.

- name: Build docker images
        run: |
          $tag = '${{ env.GITHUB_SHA }}' | cut --characters=1-15

Results in:

 $tag = '' | cut --characters=1-15