diff --git a/.github/workflows/build_blinky.yml b/.github/workflows/build_blinky.yml
index d9b74dcb45..70898cb6ac 100644
--- a/.github/workflows/build_blinky.yml
+++ b/.github/workflows/build_blinky.yml
@@ -42,6 +42,11 @@ jobs:
         run: |
              sudo apt-get update
              sudo apt-get install -y gcc-multilib
+      - name: Install GNU sed
+        if: matrix.os == 'macos-latest'
+        run: |
+             brew install gnu-sed
+             echo "$(brew --prefix)/opt/gnu-sed/libexec/gnubin" >> $GITHUB_PATH
       - name: Install newt
         run: |
              go version
@@ -53,8 +58,9 @@ 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 origin $GITHUB_SHA
+             sed -i "s/0.0.0/$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..9dc33e36ee 100644
--- a/.github/workflows/build_bootloader.yml
+++ b/.github/workflows/build_bootloader.yml
@@ -42,6 +42,11 @@ jobs:
         run: |
              sudo apt-get update
              sudo apt-get install -y gcc-multilib
+      - name: Install GNU sed
+        if: matrix.os == 'macos-latest'
+        run: |
+             brew install gnu-sed
+             echo "$(brew --prefix)/opt/gnu-sed/libexec/gnubin" >> $GITHUB_PATH
       - name: Install newt
         run: |
              go version
@@ -53,8 +58,9 @@ 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 origin $GITHUB_SHA
+             sed -i "s/0.0.0/$GITHUB_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..d2ea5de7a2 100644
--- a/.github/workflows/build_cc_target.yml
+++ b/.github/workflows/build_cc_target.yml
@@ -50,8 +50,9 @@ 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 origin $GITHUB_SHA
+             sed -i "s/0.0.0/$GITHUB_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..1b660b3486 100644
--- a/.github/workflows/build_targets.yml
+++ b/.github/workflows/build_targets.yml
@@ -37,6 +37,11 @@ jobs:
       - uses: carlosperate/arm-none-eabi-gcc-action@48db4484a55750df7a0ccca63347fcdea6534d78
         with:
           release: '12.2.Rel1'
+      - name: Install GNU sed
+        if: matrix.os == 'macos-latest'
+        run: |
+             brew install gnu-sed
+             echo "$(brew --prefix)/opt/gnu-sed/libexec/gnubin" >> $GITHUB_PATH
       - name: Install newt
         run: |
              go version
@@ -48,9 +53,10 @@ jobs:
              cp -f .github/project.yml build/project.yml
              cd build
              newt upgrade --shallow=1
+             git -C repos/apache-mynewt-core fetch origin $GITHUB_SHA
+             sed -i "s/0.0.0/$GITHUB_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..e517664277 100644
--- a/.github/workflows/newt_test_all.yml
+++ b/.github/workflows/newt_test_all.yml
@@ -34,6 +34,11 @@ jobs:
         run: |
              sudo apt-get update
              sudo apt-get install -y gcc-multilib
+      - name: Install GNU sed
+        if: matrix.os == 'macos-latest'
+        run: |
+             brew install gnu-sed
+             echo "$(brew --prefix)/opt/gnu-sed/libexec/gnubin" >> $GITHUB_PATH
       - name: Install newt
         run: |
              go version
@@ -45,8 +50,9 @@ 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 origin $GITHUB_SHA
+             sed -i "s/0.0.0/$GITHUB_SHA-commit/g" project.yml
+             newt upgrade --shallow=1
              cd ..
       - name: newt test all
         run: |