Update ats script (#200)

# Motivation
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# Content
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# Testing
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# Please check the following before marking your PR as ready for review

- [ ] I have added tests for my changes
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Author: bagel897

.circleci/ats.sh

@@ -15,7 +15,29 @@ uv run --frozen codecovcli static-analysis --token ${CODECOV_STATIC_TOKEN} --fol
 ATS_COLLECT_ARGS="${ATS_COLLECT_ARGS}${DEFAULT_TESTS},"
 echo "Label analysis with base sha: ${BASE_SHA} and default tests: ${ATS_COLLECT_ARGS}"
 runner_param="collect_tests_options=${ATS_COLLECT_ARGS}"
-response=$(uv run --frozen codecovcli label-analysis --token ${CODECOV_STATIC_TOKEN} --base-sha=$BASE_SHA --dry-run --dry-run-format="json" --runner-param "$runner_param")
+
+# Always get last 10 commits as fallback options, starting with BASE_SHA if provided
+base_commit_candidates=($(git log --format=%H | sed -n "1,10p"))
+if [[ -n ${BASE_SHA} ]]; then
+    # Prepend BASE_SHA to the candidates list if it's provided
+    base_commit_candidates=("${BASE_SHA}" "${base_commit_candidates[@]}")
+fi
+
+for base_commit in ${base_commit_candidates[@]}
+do
+    echo "Attempting label analysis with base commit: $base_commit"
+    response=$(uv run --frozen codecovcli label-analysis --token ${CODECOV_STATIC_TOKEN} --base-sha=$base_commit --dry-run --dry-run-format="json" --runner-param "$runner_param" --max-wait-time=30 || true)
+    if [[ -n $response ]]; then
+        break
+    else
+        echo "-> Attempt failed"
+    fi
+done
+
+if [[ -z $response ]]; then
+    echo "Failed to run label analysis with any base commit."
+fi
+
 mkdir codecov_ats
 jq <<< "$response" '.runner_options + .ats_tests_to_run | .[1:] | map(gsub("\""; "")) | join(" ")' --raw-output > codecov_ats/tests_to_run.txt
 jq <<< "$response" '.runner_options + .ats_tests_to_skip | .[1:] | map(gsub("\""; "")) | join(" ")' --raw-output > codecov_ats/tests_to_skip.txt