Printing base commit hash

.github/workflows/unit_tests.yml

@@ -85,6 +85,7 @@ jobs:
         # https://unix.stackexchange.com/a/338124 for reference on creating a JSON-friendly
         # comma-separated list of test targets for the matrix.
         run: |
+          echo "Base commit hash: $base_commit_hash"
           bazel run //scripts:compute_affected_tests -- $(pwd) $(pwd)/affected_targets.log $base_commit_hash compute_all_tests=$compute_all_targets
           TEST_BUCKET_LIST=$(cat ./affected_targets.log | sed 's/^\|$/"/g' | paste -sd, -)
           echo "Affected tests (note that this might be all tests if configured to run all or on the develop branch): $TEST_BUCKET_LIST"