Allow getCheckoutPathInputOrThrow to get root from config

lib/entry-points.js

@@ -162185,14 +162185,20 @@ function getUploadInputOrThrow(workflow, jobName, matrixVars) {
     matrixVars
   );
 }
-function getCheckoutPathInputOrThrow(workflow, jobName, matrixVars) {
-  return getInputOrThrow(
-    workflow,
-    jobName,
-    getAnalyzeActionName(),
-    "checkout_path",
-    matrixVars
-  ) || getRequiredEnvParam("GITHUB_WORKSPACE");
+function getRepositoryRootOrThrow(workflow, jobName, matrixVars, config, env = getEnv()) {
+  return (
+    // If the CodeQL Action already has a persisted repository root, then we can just use that.
+    config.repositoryRoot ?? // Otherwise, try to retrieve it from a `checkout_path` input in the workflow specification.
+    getInputOrThrow(
+      workflow,
+      jobName,
+      getAnalyzeActionName(),
+      "checkout_path",
+      matrixVars
+    ) ?? // Finally, if all of the above fail, just use the value of `GITHUB_WORKSPACE` since that
+    // is what is used by default.
+    env.getRequired("GITHUB_WORKSPACE" /* GITHUB_WORKSPACE */)
+  );
 }
 async function checkWorkflow(logger, codeql) {
   if (!isDynamicWorkflow() && process.env["CODEQL_ACTION_SKIP_WORKFLOW_VALIDATION" /* SKIP_WORKFLOW_VALIDATION */] !== "true") {
@@ -162763,7 +162769,12 @@ async function prepareFailedSarif(logger, features, config) {
       });
     }
     const category = getCategoryInputOrThrow(workflow, jobName, matrix);
-    const checkoutPath = getCheckoutPathInputOrThrow(workflow, jobName, matrix);
+    const checkoutPath = getRepositoryRootOrThrow(
+      workflow,
+      jobName,
+      matrix,
+      config
+    );
     const result = await generateFailedSarif(
       logger,
       features,