Adding VersionStream for gitlab-cng-18.1

[octo-sts]

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[octo-sts]

🔄 Build Failed: Git Checkout Error

FAIL Expected commit 73ea61d6dff991541d27266033669376d4735e2a for v18.1.0, found a6baeef6cba7b48f6a37cce9cc09160f39417431

Build Details

Category	Details
Build System	Git
Failure Point	git checkout --quiet origin/tags/v18.1.0

Root Cause Analysis 🔍

The build process expected a specific Git commit hash (73ea61d6dff991541d27266033669376d4735e2a) for tag v18.1.0, but found a different commit hash (a6baeef6cba7b48f6a37cce9cc09160f39417431) instead. This mismatch caused the build to fail during the git-checkout step.

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🔍 Build failure fix suggestions

Found similar build failures that have been fixed in the past and analyzed them to suggest a fix:

Similar PRs with fixes

• Adding VersionStream for gitlab-runner-17.11 #51032
• Adding VersionStream for gitlab-kas-17.8 #39813
• Adding VersionStream for gitlab-kas-17.9 #43405

Suggested Changes

File: gitlab-cng-18.1.yaml

• replace at line 86 (pipeline.git-checkout.with.expected-commit)
  Original:

      expected-commit: 73ea61d6dff991541d27266033669376d4735e2a

Replacement:

      expected-commit: a6baeef6cba7b48f6a37cce9cc09160f39417431

Content:

Update the expected-commit hash to match the actual commit that the v18.1.0 tag points to

Click to expand fix analysis

Analysis

After analyzing the similar fixed build failures, I've identified a clear pattern: in all three examples, the build failed because the expected Git commit hash for a specific tag didn't match the actual commit hash in the repository. In each case, the fix was straightforward - updating the expected-commit value in the YAML file to match the actual commit hash that the tag points to in the repository.

This type of failure happens because Git tags can be either lightweight tags or annotated tags. When a tag is an annotated tag (which contains metadata), it actually points to a tag object, which then points to a commit object. This creates a level of indirection that can cause these hash mismatches if the build system expects the tag to directly reference a commit.

In all the fixes provided, the solution was to update the expected-commit value to match the actual commit hash that the tag points to rather than changing anything else in the build configuration.

Click to expand fix explanation

Explanation

The fix is straightforward: we need to update the expected-commit value in the gitlab-cng-18.1.yaml file to match the actual commit hash that the tag v18.1.0 points to in the repository.

The error message clearly indicates that the build system expected commit hash 73ea61d6dff991541d27266033669376d4735e2a for tag v18.1.0, but actually found commit hash a6baeef6cba7b48f6a37cce9cc09160f39417431. This discrepancy is causing the build to fail.

This is likely happening because the tag v18.1.0 in the repository is an annotated tag (which contains additional metadata) rather than a lightweight tag. Annotated tags point to a tag object, which then points to a commit, while lightweight tags point directly to a commit. When the build system tries to resolve the tag, it's finding a different commit hash than what was expected in the configuration.

By updating the expected-commit value to a6baeef6cba7b48f6a37cce9cc09160f39417431, we're telling the build system to expect the correct commit hash that the tag actually points to, which will allow the build to proceed successfully. This approach exactly matches the pattern of fixes we've seen in the similar fixed build failures.

Click to expand alternative approaches

Alternative Approaches

• Rather than hardcoding the commit hash, the build system could be modified to automatically resolve annotated tags to their commit hashes, eliminating this class of errors. However, this would require changes to the build infrastructure rather than a simple config update.
• Another approach would be to create lightweight tags in the upstream repository instead of annotated tags, but that would require changes to upstream release processes which is not under our control.
• A more complex alternative would be to implement a pre-build validation step that checks if tags resolve to the expected commits and automatically updates the YAML files when discrepancies are found, but this would add complexity to the build process.

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