diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index b703354..5e232ee 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -11,7 +11,12 @@ jobs:
     container:
       image: python:3.12-slim
     steps:
-      - uses: actions/checkout@v4
+      - name: Install git
+        run: apt-get update && apt-get install -y --no-install-recommends git
+      - name: Checkout
+        run: |
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          git clone --depth=1 --branch="${GITHUB_REF_NAME}" "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE" || git clone --depth=1 "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE"
       - run: pip install ruff black
       - name: Check formatting
         run: black --check src/ tests/ frontends/
@@ -23,7 +28,12 @@ jobs:
     container:
       image: python:3.12-slim
     steps:
-      - uses: actions/checkout@v4
+      - name: Install git
+        run: apt-get update && apt-get install -y --no-install-recommends git
+      - name: Checkout
+        run: |
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          git clone --depth=1 --branch="${GITHUB_REF_NAME}" "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE" || git clone --depth=1 "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE"
       - run: pip install mypy
       - run: mypy src/
 
@@ -32,7 +42,12 @@ jobs:
     container:
       image: python:3.12-slim
     steps:
-      - uses: actions/checkout@v4
+      - name: Install git
+        run: apt-get update && apt-get install -y --no-install-recommends git
+      - name: Checkout
+        run: |
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          git clone --depth=1 --branch="${GITHUB_REF_NAME}" "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE" || git clone --depth=1 "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE"
       - name: Install dependencies
         run: pip install -e ".[dev]"
       - name: Run tests