Checkout fails on forked PRs

[HichemTab-tech]

Inertia adapter(s) affected

• React
• Vue 3
• Svelte
• Not Applicable

JS package version

NA

Backend stack (optional)

NA

Describe the problem

What happened

The workflow failed during actions/checkout@v4:

git fetch ... origin +refs/heads/add-page-context-to-resolve-component-function* ...
The process '/usr/bin/git' failed with exit code 1

Why

For forked PRs, the branch exists only in the fork, not in inertiajs/inertia.
We were trying to fetch it from the base repo → checkout failed.

Fix

Checkout the PR head repo + commit instead of the base:

- uses: actions/checkout@v4
  with:
    repository: ${{ github.event.pull_request.head.repo.full_name }}
    ref: ${{ github.event.pull_request.head.sha }}

(Universal version for both pushes and PRs:
repository: ${{ github.event.pull_request.head.repo.full_name || github.repository }}
ref: ${{ github.event.pull_request.head.sha || github.sha }})

Note

Although this fix unblocks checkout, git-auto-commit-action@v5 may still fail later: the GITHUB_TOKEN is read-only for forks. If we want auto-push on fork PRs, we’ll need to explore a PAT/GitHub App approach.

I'd be happy to open a PR if we agree on the approach.

Steps to reproduce

check #2485

[kresnasatya]

I'm facing this too. Please see: #2535