Revert CI workflow changes as requested

Copilot · AtsushiSakai · Copilot · commit db42874938c8 · 2025-10-22T14:45:11.000Z
Co-authored-by: AtsushiSakai &lt;3813847+AtsushiSakai@users.noreply.github.com&gt;
diff --git a/.github/workflows/Linux_CI.yml b/.github/workflows/Linux_CI.yml
@@ -19,7 +19,6 @@ jobs:
     steps:
     - uses: actions/checkout@v5
     - run: git fetch --prune --unshallow
-    - run: git fetch origin master:master
 
     - name: Setup python
       uses: actions/setup-python@v6
diff --git a/.github/workflows/MacOS_CI.yml b/.github/workflows/MacOS_CI.yml
@@ -21,7 +21,6 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - run: git fetch --prune --unshallow
-      - run: git fetch origin master:master
 
       - name: Update bash
         run: brew install bash
diff --git a/.github/workflows/Windows_CI.yml b/.github/workflows/Windows_CI.yml
@@ -21,7 +21,6 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - run: git fetch --prune --unshallow
-      - run: git fetch origin master:master
 
       - name: Setup python
         uses: actions/setup-python@v6
