fix(cache): pass REPOSITORY_CHANGED error up (#19877)

lib/workers/repository/cache.ts

 /* istanbul ignore file */
 
+import { REPOSITORY_CHANGED } from '../../constants/error-messages';
 import { logger } from '../../logger';
 import { platform } from '../../modules/platform';
 import { getCache } from '../../util/cache/repository';
@@ -94,6 +95,9 @@ async function generateBranchCache(
       logger.warn({ err, branchName }, 'HTTP error generating branch cache');
       return null;
     }
+    if (err.message === REPOSITORY_CHANGED) {
+      throw err;
+    }
     logger.error({ err, branchName }, 'Error generating branch cache');
     return null;
   }