diff --git a/Cronet/tools/import/copy.bara.sky b/Cronet/tools/import/copy.bara.sky
index 59e59e3..c066fc0 100644
--- a/Cronet/tools/import/copy.bara.sky
+++ b/Cronet/tools/import/copy.bara.sky
@@ -36,6 +36,8 @@
         "crypto/**",
         "ipc/**",
         "net/**",
+        # Note: Only used for tests.
+        "testing/**",
         "url/**",
         "LICENSE",
     ],
@@ -49,6 +51,8 @@
         "components/cronet/ios/**",
         "components/cronet/native/**",
 
+        # Per aosp/2399270
+        "testing/buildbot/**",
 
         # Exclude all third-party directories. Those are specified explicitly
         # below, so no dependency can accidentally creep in.
@@ -70,10 +74,10 @@
         "base/third_party/symbolize/**",
         "base/third_party/valgrind/**",
         "base/third_party/xdg_user_dirs/**",
-        # Not present in source repo; requires gclient sync.
         "buildtools/third_party/libc++/**",
-        # Not present in source repo; requires gclient sync.
         "buildtools/third_party/libc++abi/**",
+        # Note: Only used for tests.
+        "net/third_party/nist-pkits/**",
         "net/third_party/quiche/**",
         "net/third_party/uri_template/**",
         "third_party/abseil-cpp/**",
@@ -81,12 +85,21 @@
         "third_party/ashmem/**",
         "third_party/boringssl/**",
         "third_party/brotli/**",
-        # Not present in source repo; requires gclient sync.
+        # Note: Only used for tests.
+        "third_party/ced/**",
+        # Note: Only used for tests.
+        "third_party/googletest/**",
         "third_party/icu/**",
         "third_party/libevent/**",
+        # Note: Only used for tests.
+        "third_party/libxml/**",
+        # Note: Only used for tests.
+        "third_party/lss/**",
         "third_party/metrics_proto/**",
         "third_party/modp_b64/**",
         "third_party/protobuf/**",
+        # Note: Only used for tests.
+        "third_party/quic_trace/**",
         "third_party/zlib/**",
     ],
     exclude = common_excludes,