chore: import upstream snapshot with attribution

ci/git_pull.sh

@@ -0,0 +1,30 @@
+# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+BRANCH=$1
+
+MAX_RETRY=5
+n=0
+
+while [ "$n" -lt "$MAX_RETRY" ]; do
+  git pull upstream "$BRANCH" --no-edit && break
+  n=$((n+1))
+  echo "git pull failed, retrying in 5 seconds... ($n/$MAX_RETRY)"
+  sleep 5
+done
+
+if [ "$n" -eq "$MAX_RETRY" ]; then
+  echo "Pull failed after $MAX_RETRY retries"
+  exit 2
+fi