diff --git a/.github/workflows/build_blinky.yml b/.github/workflows/build_blinky.yml
index d9b74dcb45..eb46933cdd 100644
--- a/.github/workflows/build_blinky.yml
+++ b/.github/workflows/build_blinky.yml
@@ -30,7 +30,9 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
       - uses: actions/setup-go@v3
         with:
           go-version: 'stable'
@@ -53,8 +55,9 @@ jobs:
              cp -f .github/project.yml build/project.yml
              cd build
              newt upgrade --shallow=1
-             rm -rf repos/apache-mynewt-core
-             git clone .. repos/apache-mynewt-core
+             git -C repos/apache-mynewt-core fetch $GITHUB_SHA
+             sed -i "s/0.0.0/$GITHUB_SHA-commit/g" project.yml
+             newt upgrade --shallow=1
              cd ..
       - name: Build Blinky
         shell: bash
diff --git a/.github/workflows/build_bootloader.yml b/.github/workflows/build_bootloader.yml
index 0cd89f9aa9..8a4b20a2e5 100644
--- a/.github/workflows/build_bootloader.yml
+++ b/.github/workflows/build_bootloader.yml
@@ -53,8 +53,10 @@ jobs:
              cp -f .github/project.yml build/project.yml
              cd build
              newt upgrade --shallow=1
-             rm -rf repos/apache-mynewt-core
-             git clone .. repos/apache-mynewt-core
+             SHA=`git rev-parse HEAD`
+             git -C repos/apache-mynewt-core fetch $SHA
+             sed -i "s/0.0.0/$SHA-commit/g" project.yml
+             newt upgrade --shallow=1
              cd ..
       - name: Build bootloader
         shell: bash
diff --git a/.github/workflows/build_cc_target.yml b/.github/workflows/build_cc_target.yml
index daf8e8c63e..43dc5b3c27 100644
--- a/.github/workflows/build_cc_target.yml
+++ b/.github/workflows/build_cc_target.yml
@@ -50,8 +50,10 @@ jobs:
              cp -f .github/project.yml build/project.yml
              cd build
              newt upgrade --shallow=1
-             rm -rf repos/apache-mynewt-core
-             git clone .. repos/apache-mynewt-core
+             SHA=`git rev-parse HEAD`
+             git -C repos/apache-mynewt-core fetch $SHA
+             sed -i "s/0.0.0/$SHA-commit/g" project.yml
+             newt upgrade --shallow=1
              cd ..
       - name: Build targets
         shell: bash
diff --git a/.github/workflows/build_targets.yml b/.github/workflows/build_targets.yml
index d3b113d8ab..9bb528cbdf 100644
--- a/.github/workflows/build_targets.yml
+++ b/.github/workflows/build_targets.yml
@@ -48,9 +48,11 @@ jobs:
              cp -f .github/project.yml build/project.yml
              cd build
              newt upgrade --shallow=1
+             SHA=`git rev-parse HEAD`
+             git -C repos/apache-mynewt-core fetch $SHA
+             sed -i "s/0.0.0/$SHA-commit/g" project.yml
+             newt upgrade --shallow=1
              rm -rf targets
-             rm -rf repos/apache-mynewt-core
-             git clone .. repos/apache-mynewt-core
              cd ..
       - name: Build targets
         shell: bash
diff --git a/.github/workflows/newt_test_all.yml b/.github/workflows/newt_test_all.yml
index c6480deccf..94bb571d2d 100644
--- a/.github/workflows/newt_test_all.yml
+++ b/.github/workflows/newt_test_all.yml
@@ -45,8 +45,10 @@ jobs:
              cp -f .github/project.yml build/project.yml
              cd build
              newt upgrade --shallow=1
-             rm -rf repos/apache-mynewt-core
-             git clone .. repos/apache-mynewt-core
+             SHA=`git rev-parse HEAD`
+             git -C repos/apache-mynewt-core fetch $SHA
+             sed -i "s/0.0.0/$SHA-commit/g" project.yml
+             newt upgrade --shallow=1
              cd ..
       - name: newt test all
         run: |