diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1fdbc7835..f46d0ac7b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,19 +15,22 @@ jobs:
       run: |
         sudo apt-get update
         sudo apt-get install build-essential asciidoc binutils bzip2 gawk gettext git libncurses5-dev libz-dev patch unzip zlib1g-dev lib32gcc1 libc6-dev-i386 subversion flex uglifyjs git-core gcc-multilib p7zip p7zip-full msmtp libssl-dev texinfo libglib2.0-dev xmlto qemu-utils upx libelf-dev autoconf automake libtool autopoint device-tree-compiler
+    - name: Clone source code
+      env: 
+        REPO_URL: https://github.com/ysurac/openmptcprouter
+        REPO_BRANCH: develop
+      run: |
+        git clone --depth 1 $REPO_URL -b $REPO_BRANCH openwrt
     - name: Build toolchain
       env:
         OMR_TARGET: ${{matrix.OMR_TARGET}}
       run: |
-        git clone https://github.com/ysurac/openmptcprouter || true
-        pwd
-        ls
         cd openmptcprouter
         git checkout develop || true
         git pull || true
         export OMR_FEED_URL="https://github.com/ysurac/openmptcprouter-feeds"
         export OMR_FEED_SRC="develop"
-        sh build.sh -j1 V=s
+        sh build.sh -j$(nproc)
         #echo -e "$OMR_PRIVKEY" > /home/runner/work/openmptcprouter-feeds/openmptcprouter-feeds/openmptcprouter/${{ env.OMR_TARGET }}/source/key-build
         #echo -e "$OMR_PUBKEY" > /home/runner/work/openmptcprouter-feeds/openmptcprouter-feeds/openmptcprouter/${{ env.OMR_TARGET }}/source/key-build.pub