diff --git a/.github/workflows/detect-pr-pipeline.yaml b/.github/workflows/detect-pr-pipeline.yaml
index 8cc600a..0c343bb 100644
--- a/.github/workflows/detect-pr-pipeline.yaml
+++ b/.github/workflows/detect-pr-pipeline.yaml
@@ -23,7 +23,7 @@ jobs:
         run: |
           git clone --depth=1 "https://x-access-token:${{ secrets.GITEA_TOKEN }}@git.farh.net/${{ github.repository }}.git" .
           git fetch origin "$BASE_REF" --depth=1
-          git fetch origin "$HEAD_REF" --depth=1
+          git fetch origin +refs/pull/*/head:refs/pull/*/head --depth=1
           git checkout "${{ github.sha }}"
 
       - name: Run detection tests
@@ -45,13 +45,15 @@ jobs:
         run: |
           git clone --depth=1 "https://x-access-token:${{ secrets.GITEA_TOKEN }}@git.farh.net/${{ github.repository }}.git" .
           git fetch origin "$BASE_REF" --depth=1
-          git fetch origin "$HEAD_REF" --depth=1
+          git fetch origin +refs/pull/*/head:refs/pull/*/head --depth=1
           git checkout "${{ github.sha }}"
 
       - name: Get changed files
         run: |
           mkdir -p /tmp/pr-detect
-          git diff --name-only "origin/$BASE_REF" HEAD > /tmp/pr-detect/changed_files.txt
+          git fetch origin "$BASE_REF" --depth=1 2>/dev/null
+          git fetch origin +refs/pull/*/head:refs/pull/*/head --depth=1 2>/dev/null
+          git diff --name-only "origin/$BASE_REF"...HEAD > /tmp/pr-detect/changed_files.txt
           echo "Files found: $(wc -l < /tmp/pr-detect/changed_files.txt)"
           cat /tmp/pr-detect/changed_files.txt