Fix deploy preview checkout for fork PRs#701
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NullVoxPopuli merged 1 commit intouniversal-ember:mainfrom Apr 4, 2026
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The deploy-preview workflow checks out `workflow_run.head_branch` but defaults to the upstream repo. For fork PRs, the branch only exists on the fork, so `git fetch` fails with exit code 1. Add `repository: workflow_run.head_repository.full_name` to the checkout step so it fetches from the correct repo. Falls back to `github.repository` for workflow_dispatch triggers where there is no workflow_run context. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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NullVoxPopuli
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Apr 4, 2026
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Summary
The Deploy Preview workflow fails for fork PRs because
actions/checkouttries to fetch the PR's head branch from the upstream repo, where it doesn't exist.The checkout step uses
ref: ${{ github.event.workflow_run.head_branch }}but doesn't specify arepository, so it defaults togithub.repository(the upstream). For fork PRs the branch only exists on the fork, causing:Fix
Add
repository: ${{ github.event.workflow_run.head_repository.full_name || github.repository }}to the checkout step. This fetches from the fork repo forworkflow_runevents, and falls back to the current repo forworkflow_dispatch(whereworkflow_runcontext doesn't exist).Test plan
workflow_dispatchstill works (falls back togithub.repository)🤖 Generated with Claude Code