diff --git a/gpu-dawn/.github/workflows/ci.yml b/gpu-dawn/.github/workflows/ci.yml
index e4471f42..d7f09c14 100644
--- a/gpu-dawn/.github/workflows/ci.yml
+++ b/gpu-dawn/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
           sudo apt install xz-utils
           sudo sh -c 'wget -c https://ziglang.org/builds/zig-linux-x86_64-0.9.0-dev.2023+16b753549.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
       - name: Clone mach-glfw
-        run: git clone https://github.com/hexops/mach-glfw libs/mach-glfw
+        run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: test
         run: zig build test && find zig-out/
   # TODO(build-system): enable windows CI here once gpu-dawn builds under Windows
@@ -51,7 +51,7 @@ jobs:
           brew install xz
           sudo sh -c 'wget -c https://ziglang.org/builds/zig-macos-x86_64-0.9.0-dev.2023+16b753549.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
       - name: Clone mach-glfw
-        run: git clone https://github.com/hexops/mach-glfw libs/mach-glfw
+        run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: test
         run: zig build test && find zig-out/
         env:
diff --git a/gpu-dawn/.github/workflows/m1_ci.yml b/gpu-dawn/.github/workflows/m1_ci.yml
index cc349a1c..58523c47 100644
--- a/gpu-dawn/.github/workflows/m1_ci.yml
+++ b/gpu-dawn/.github/workflows/m1_ci.yml
@@ -20,7 +20,7 @@ jobs:
         run: |
           zig version
       - name: Clone mach-glfw
-        run: git clone https://github.com/hexops/mach-glfw libs/mach-glfw
+        run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: test
         run: zig build test && find zig-out/
         env: