diff --git a/.docker/build-linux.sh b/.docker/build-linux.sh
index fa5e7bb08..d37b57f19 100755
--- a/.docker/build-linux.sh
+++ b/.docker/build-linux.sh
@@ -44,17 +44,7 @@ cd "$HOME"
 rm -rf dwarfs dwarfs-*
 
 if [[ "$BUILD_FROM_TARBALL" == "1" ]]; then
-  TARBALL="dwarfs-source-${GITHUB_RUN_NUMBER}.tar.zst"
-  TARBALL_PATH=""
-  if [ -f "/tmp-runner/artifacts/$TARBALL" ]; then
-    TARBALL_PATH="/tmp-runner/artifacts"
-  elif [ -f "/workspace/$TARBALL" ]; then
-    TARBALL_PATH="/workspace"
-  else
-    echo "source tarball not found: $TARBALL"
-    exit 1
-  fi
-  tar xf "$TARBALL_PATH/$TARBALL"
+  tar xf "/artifacts/cache/dwarfs-source-${GITHUB_RUN_NUMBER}.tar.zst"
   ln -s dwarfs-* dwarfs
 else
   git config --global --add safe.directory /workspace
@@ -314,9 +304,8 @@ else
   elif [[ "-$BUILD_TYPE-" == *-source-* ]]; then
     $BUILD_TOOL package_source
     $BUILD_TOOL copy_source_artifacts
-    rm -rf /tmp-runner/artifacts
-    mkdir -p /tmp-runner/artifacts
-    cp dwarfs-*.tar.zst /tmp-runner/artifacts/dwarfs-source-${GITHUB_RUN_NUMBER}.tar.zst
+    mkdir -p /artifacts/cache
+    cp dwarfs-*.tar.zst /artifacts/cache/dwarfs-source-${GITHUB_RUN_NUMBER}.tar.zst
   fi
 
   if [[ "-$BUILD_TYPE-" != *-[at]san-* ]] && \
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d29f77eec..1ca9c1528 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -137,27 +137,6 @@ jobs:
             --env GITHUB_RUN_ATTEMPT \
             dwarfs-linux-build-arch
 
-      - name: Upload Source Package
-        uses: actions/upload-artifact@v4
-        with:
-          name: dwarfs-source
-          path: ${{ runner.temp }}/artifacts/dwarfs-source-${{ github.run_number }}.tar.zst
-          if-no-files-found: error
-          compression-level: 0
-
-      - name: Move Source Tarball For Caching
-        run: |
-          mv ${{ runner.temp }}/artifacts/dwarfs-source-${{ github.run_number }}.tar.zst ${GITHUB_WORKSPACE}/
-
-      - name: Cache Source Tarball
-        uses: actions/cache/save@v4
-        with:
-          path: dwarfs-source-${{ github.run_number }}.tar.zst
-          key: dwarfs-source-run-${{ github.run_number }}
-
-      - name: Remove Source Tarball
-        run: rm -v dwarfs-source-${{ github.run_number }}.tar.zst
-
   linux-src:
     needs: package-source
 
@@ -224,31 +203,6 @@ jobs:
           fetch-depth: '0'
           ref: ${{ github.ref }}
 
-      - name: Fetch Source Tarball From Cache
-        id: source-tarball
-        uses: actions/cache/restore@v4
-        with:
-          path: dwarfs-source-${{ github.run_number }}.tar.zst
-          key: dwarfs-source-run-${{ github.run_number }}
-
-      - name: Download Source Tarball Artifact
-        if: steps.source-tarball.outputs.cache-hit != 'true'
-        uses: actions/download-artifact@v4
-        with:
-          name: dwarfs-source
-
-      - name: Re-cache Source Tarball
-        if: steps.source-tarball.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
-        with:
-          path: dwarfs-source-${{ github.run_number }}.tar.zst
-          key: dwarfs-source-run-${{ github.run_number }}
-
-      - name: Move Tarball To Artifacts Location
-        run: |
-          mkdir -p ${{ runner.temp }}/artifacts
-          mv ${GITHUB_WORKSPACE}/dwarfs-source-${{ github.run_number }}.tar.zst ${{ runner.temp }}/artifacts/
-
       - name: Build Docker Image
         run: |
           docker build \
@@ -266,6 +220,7 @@ jobs:
             --mount type=bind,source=${{ runner.temp }},target=/tmp-runner \
             --mount type=bind,source=/home/mhx/github-ccache,target=/ccache \
             --mount type=bind,source=/home/mhx/github-local,target=/local \
+            --mount type=bind,source=/mnt/opensource/artifacts/dwarfs,target=/artifacts \
             --env BUILD_FROM_TARBALL=1 \
             --env BUILD_TYPE=${{ matrix.build_type }} \
             --env BUILD_ARCH=${{ matrix.arch }} \