diff --git a/.github/workflows/build-check_aarch64-rt.yml b/.github/workflows/build-check_aarch64-rt.yml
index 9f667f3216e31..97913e53a54a3 100644
--- a/.github/workflows/build-check_aarch64-rt.yml
+++ b/.github/workflows/build-check_aarch64-rt.yml
@@ -26,7 +26,7 @@ jobs:
           dnf groupinstall 'Development Tools' -y
           dnf install openssl -y
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
         with:
           ref: "${{ github.event.pull_request.head.sha }}"
           fetch-depth: 0
@@ -35,4 +35,4 @@ jobs:
           git config --global --add safe.directory /__w/kernel-src-tree/kernel-src-tree
           cp configs/kernel-aarch64-rt-rhel.config .config
           make olddefconfig
-          make -j8
+          make -j$(nproc)
diff --git a/.github/workflows/build-check_aarch64.yml b/.github/workflows/build-check_aarch64.yml
index 62234d160d291..dd892cf789a1f 100644
--- a/.github/workflows/build-check_aarch64.yml
+++ b/.github/workflows/build-check_aarch64.yml
@@ -26,7 +26,7 @@ jobs:
           dnf groupinstall 'Development Tools' -y
           dnf install openssl -y
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
         with:
           ref: "${{ github.event.pull_request.head.sha }}"
           fetch-depth: 0
@@ -35,4 +35,4 @@ jobs:
           git config --global --add safe.directory /__w/kernel-src-tree/kernel-src-tree
           cp configs/kernel-aarch64-rhel.config .config
           make olddefconfig
-          make -j8
+          make -j$(nproc)
diff --git a/.github/workflows/build-check_x86_64-rt.yml b/.github/workflows/build-check_x86_64-rt.yml
index 8dadc0f02e404..38559e1b1fb88 100644
--- a/.github/workflows/build-check_x86_64-rt.yml
+++ b/.github/workflows/build-check_x86_64-rt.yml
@@ -26,7 +26,7 @@ jobs:
           dnf groupinstall 'Development Tools' -y
           dnf install openssl -y
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
         with:
           ref: "${{ github.event.pull_request.head.sha }}"
           fetch-depth: 0
@@ -35,4 +35,4 @@ jobs:
           git config --global --add safe.directory /__w/kernel-src-tree/kernel-src-tree
           cp configs/kernel-x86_64-rt-rhel.config .config
           make olddefconfig
-          make -j8
+          make -j$(nproc)
diff --git a/.github/workflows/build-check_x86_64.yml b/.github/workflows/build-check_x86_64.yml
index f5f8da22fcf43..2c5de23997536 100644
--- a/.github/workflows/build-check_x86_64.yml
+++ b/.github/workflows/build-check_x86_64.yml
@@ -26,7 +26,7 @@ jobs:
           dnf groupinstall 'Development Tools' -y
           dnf install openssl -y
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
         with:
           ref: "${{ github.event.pull_request.head.sha }}"
           fetch-depth: 0
@@ -35,4 +35,4 @@ jobs:
           git config --global --add safe.directory /__w/kernel-src-tree/kernel-src-tree
           cp configs/kernel-x86_64-rhel.config .config
           make olddefconfig
-          make -j8
+          make -j$(nproc)