Problem

The Check uv.lock file workflow (job logs) fails at the actions/checkout step because git tries to fetch the PR's remote branch (feat/add-litellm-language-model), which does not exist on the remote:

/usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +refs/heads/feat/add-litellm-language-model*:refs/remotes/origin/feat/add-litellm-language-model* ...
The process '/usr/bin/git' failed with exit code 1

Fix

In .github/workflows/check-uvlockfile.yml, add ref: main to the actions/checkout step so it always checks out the main branch instead of the triggering PR's remote branch:

- uses: actions/checkout@v6
  with:
    ref: main

The following is the prior conversation context from the user's chat exploration (may be truncated):

User: Please find a solution for this failing job. Use the logs, job definition, and any referenced files where the failure occurred. Keep your response focused on the solution and include code suggestions when appropriate.

Assistant: Let me grab the logs for that job right away!

Assistant: ## Root Cause

The job fails at the actions/checkout step because actions/checkout@v6 does not exist — the current latest major version is v4. This causes the git fetch to fail with exit code 1 after retrying three times.

Fix

Update line 23 in .github/workflows/check-uvlockfile.yml to use a valid version:

# Before
- uses: actions/checkout@v6

# After
- uses: actions/checkout@v4

The full corrected workflow:

name: Check uv.lock file
permissions:
  contents: read

on:
  pull_request:
    paths:
      - 'pyproject.toml'
      - 'uv.lock'
      - 'packages/**/pyproject.toml'
  workflow_dispatch:

jobs:
  check-lock:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4  # ✅ Fixed: v6 does not exist

      - name: Install uv
        uses: astral-sh/setup-uv@v4

      - name: Check lockfile
        run: uv lock --check

Commit this change to the feat/add-litellm-language-model branch and the workflow should proceed past checkout and run uv lock --check successfully.

User: ```
/usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +refs/heads/feat/add-litellm-language-model*:refs/remotes/origin/feat/add-litellm-language-model* +refs/tags/feat/add-litellm-language-model*:refs/tags/feat/add-litellm-language-model*
The process '/usr/bin/git' failed with exit code 1

Incorrect. https://github.com/actions/checkout/releases/tag/v6.0.2 shows v6.0.2 is the latest version of `checkout`. 

The problem is when `git` tries to checkout some data in a remote branch that doesn't exist. We should only ever use local `main` branch.



Assistant: You're right, apologies for the incorrect diagnosis. The fix is to pin the `actions/checkout` step to always use the `main` branch by adding `ref: main`, so it never tries to fetch the PR's remote branch.

```yaml name=.github/workflows/check-uvlockfile.yml url=https://github.com/MemMachine/MemMachine/blob/1cd65974381c4ad8c43400465d103577c53186d0/.github/workflows/check-uvlockfile.yml#L23-L24
      - uses: actions/checkout@v6
        with:
          ref: main  # ✅ Always check out main, never the PR's remote branch

This explicitly tells actions/checkout to fetch refs/heads/main rather than the triggering PR branch (feat/add-litellm-language-model), which doesn't exist on the remote.

Would you like me to apply this fix directly to the file?

User: Create a new pull request with the fix.

Assistant: We're waiting for your response to the confirmation dialog to proceed with creating the pull request.