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[GH-ISSUE #779] `github.event.head_commit` is missing #488

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opened 2026-03-01 21:43:51 +03:00 by kerem · 4 comments

kerem commented

2026-03-01 21:43:51 +03:00

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Originally created by @szmarczak on GitHub (Aug 17, 2021).
Original GitHub issue: https://github.com/nektos/act/issues/779

Originally assigned to: @catthehacker on GitHub.

System information

Operating System: Linux
Architecture: x64
Apple M1: no
Docker version: Docker version 20.10.7-ce, build 363e9a88a11be517d9e8c65c998ff56f774eb4dc
Docker image used in act:
act version: act version 0.2.24

Expected behaviour

Should execute next steps.

Actual behaviour

ERRO[0000] Unable to interpolate string '${{ !contains(github.event.head_commit.message, '[skip ci]') }}' - [TypeError: Cannot access member 'message' of undefined]

Workflow and/or repository

https://github.com/apify/apify-js

act -j build_and_test

Steps to reproduce

Clone https://github.com/apify/apify-js
act -j build_and_test

`act` output

Log (TBD)

PASTE YOUR LOG HERE

Originally created by @szmarczak on GitHub (Aug 17, 2021). Original GitHub issue: https://github.com/nektos/act/issues/779 Originally assigned to: @catthehacker on GitHub.  ## System information  - Operating System: Linux - Architecture: x64 - Apple M1: no - Docker version: Docker version 20.10.7-ce, build 363e9a88a11be517d9e8c65c998ff56f774eb4dc - Docker image used in `act`: - `act` version: `act version 0.2.24` ## Expected behaviour Should execute next steps. ## Actual behaviour ``` ERRO[0000] Unable to interpolate string '${{ !contains(github.event.head_commit.message, '[skip ci]') }}' - [TypeError: Cannot access member 'message' of undefined] ``` ## Workflow and/or repository https://github.com/apify/apify-js ``` act -j build_and_test ``` ## Steps to reproduce 1. Clone https://github.com/apify/apify-js 2. `act -j build_and_test` ## `act` output  <details> <summary>Log (TBD)</summary> ```none PASTE YOUR LOG HERE ``` </details>

kerem added the

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2026-03-01 21:43:51 +03:00

kerem commented

2026-03-01 21:43:51 +03:00

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@brunowego commented on GitHub (Aug 23, 2021):

Related to #188

@brunowego commented on GitHub (Aug 23, 2021): Related to #188

kerem commented

2026-03-01 21:43:52 +03:00

Author

Owner

@lermana commented on GitHub (Oct 3, 2021):

I can confirm this is happening to me as well, by the way. For instance, I can define the following just fine:

if: startsWith(github.ref, 'ref')

However, this errors out:

if: startsWith(github.event.head_commit.message, 'build')

Here's some of the output when run with -v:

DEBU[0000] Evaluating 'Boolean(startsWith(github['event']['head_commit']['message'], 'build'))' instead of 'Boolean(startsWith(github.event.head_commit.message, 'build'))'

Thank you for act, by the way -- it's a great tool!

@lermana commented on GitHub (Oct 3, 2021): I can confirm this is happening to me as well, by the way. For instance, I can define the following just fine: ``` if: startsWith(github.ref, 'ref') ``` However, this errors out: ``` if: startsWith(github.event.head_commit.message, 'build') ``` Here's some of the output when run with `-v`: ``` DEBU[0000] Evaluating 'Boolean(startsWith(github['event']['head_commit']['message'], 'build'))' instead of 'Boolean(startsWith(github.event.head_commit.message, 'build'))' ``` Thank you for `act`, by the way -- it's a great tool!

kerem commented

2026-03-01 21:43:52 +03:00

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Owner

@lermana commented on GitHub (Oct 3, 2021):

I want to follow up that a different thread provided a workaround (thanks @brunowego for linking!). The issue here is that act runs off an empty event JSON, so you've got to provide your own if you want to access that data. You can see a working example (plus the rest of the conversation that led to it), here.

Here's what I ran to allow for testing if on a commit message:

act -W components.yaml -s GITHUB_TOKEN=$GITHUB_TOKEN  -e <(cat << EOF
{
    "head_commit": {
      "message": "build latest"
    }
  }
EOF
)

@lermana commented on GitHub (Oct 3, 2021): I want to follow up that a different thread provided a workaround (thanks @brunowego for linking!). The issue here is that `act` runs off an empty `event` JSON, so you've got to provide your own if you want to access that data. You can see a working example (plus the rest of the conversation that led to it), [here](https://github.com/nektos/act/issues/188#issuecomment-904169001). Here's what I ran to allow for testing `if` on a commit message: ``` act -W components.yaml -s GITHUB_TOKEN=$GITHUB_TOKEN -e <(cat << EOF { "head_commit": { "message": "build latest" } } EOF ) ```

kerem commented

2026-03-01 21:43:52 +03:00

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Owner

@ricardo-dematos commented on GitHub (Aug 12, 2022):

I want to follow up that a different thread provided a workaround (thanks @brunowego for linking!). The issue here is that act runs off an empty event JSON, so you've got to provide your own if you want to access that data. You can see a working example (plus the rest of the conversation that led to it), here.

Here's what I ran to allow for testing if on a commit message:
act -W components.yaml -s GITHUB_TOKEN=$GITHUB_TOKEN  -e <(cat << EOF
{
    "head_commit": {
      "message": "build latest"
    }
  }
EOF
)

This is how I'm working around the missing field, but since act populates the github.sha, surely it can also populate the head_commit field. Right?

@ricardo-dematos commented on GitHub (Aug 12, 2022): > I want to follow up that a different thread provided a workaround (thanks @brunowego for linking!). The issue here is that `act` runs off an empty `event` JSON, so you've got to provide your own if you want to access that data. You can see a working example (plus the rest of the conversation that led to it), [here](https://github.com/nektos/act/issues/188#issuecomment-904169001). > > Here's what I ran to allow for testing `if` on a commit message: > > ``` > act -W components.yaml -s GITHUB_TOKEN=$GITHUB_TOKEN -e <(cat << EOF > { > "head_commit": { > "message": "build latest" > } > } > EOF > ) > ``` This is how I'm working around the missing field, but since `act` populates the `github.sha`, surely it can also populate the `head_commit` field. Right?

kerem referenced this issue

2026-03-01 21:51:19 +03:00

[PR #488] [MERGED] Load .secrets file as default #1469

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[GH-ISSUE #779] github.event.head_commit is missing #488

System information

Expected behaviour

Actual behaviour

Workflow and/or repository

Steps to reproduce

act output

[GH-ISSUE #779] `github.event.head_commit` is missing #488

`act` output