diff --git a/.github/workflows/build-tarball.yml b/.github/workflows/build-tarball.yml
index 9091e2165281..ad6139c04e20 100644
--- a/.github/workflows/build-tarball.yml
+++ b/.github/workflows/build-tarball.yml
@@ -75,6 +75,7 @@ permissions:
 jobs:
   build-tarball:
     if: github.event.pull_request.draft == false
+    # Baseline run for the source tarball runner comparison.
     runs-on: ubuntu-slim
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1