diff --git a/.github/workflows/cipd.yml b/.github/workflows/cipd.yml
index d8cca79..6f9b186 100644
--- a/.github/workflows/cipd.yml
+++ b/.github/workflows/cipd.yml
@@ -11,6 +11,9 @@ on:
         description: 'the target cipd ensure file(s), split by comma. (e.g. gn.ensure)'
         required: true
         type: string
+      custom_script:
+        description: 'use the custom script after downloading cipd package by ensure files'
+        type: string
 
 jobs:
   download:
@@ -35,6 +38,11 @@ jobs:
       - name: generate sha256 list
         run: python3 publish_helper.py --sha256-list
 
+      - name: run custom script
+        if: ${{ github.event.inputs.custom_script }}
+        run: |
+          bash ${{ github.event.inputs.custom_script }}
+
       - name: push to release
         uses: ncipollo/release-action@v1
         with:
diff --git a/publish_clang_format.sh b/publish_clang_format.sh
new file mode 100644
index 0000000..5cffd91
--- /dev/null
+++ b/publish_clang_format.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+# This script is used to extract clang-format executable file from llvm package
+
+root_dir=$PWD
+
+# clear the hash.md
+cat /dev/null > hash.md
+
+# Traverse all tar.gz under llvm directory 
+for file in buildtools-*.tar.gz;do
+    # llvm files already exists
+    raw_folder=$(echo $file | sed 's/.tar.gz//g')
+    
+    # extract the clang-format file
+    clang_format_dir=$(echo $raw_folder | sed 's/llvm/clang-format/g')
+    mkdir $clang_format_dir
+    subdir=$(echo $file | awk -F"-" '{print $(NF-1)"-"$NF}')
+    cp $root_dir/buildtools/llvm/$subdir/bin/clang-format $clang_format_dir/
+    
+    # package the artifacts
+    tar -czf $clang_format_dir.tar.gz $clang_format_dir
+
+    # get the hash of file and write in hash.md
+    hash=$(openssl dgst -sha256 "$clang_format_dir.tar.gz" | awk '{print $2}')
+    echo "$clang_format_dir.tar.gz: $hash" - >> hash.md
+
+    # delete llvm packages
+    rm -rf $file
+done
+
+echo "Extraction and archiving completed."
\ No newline at end of file