diff --git a/.gitea/workflows/lint.yml b/.gitea/workflows/lint.yml
index 59daf5616c..77dc6d22e6 100644
--- a/.gitea/workflows/lint.yml
+++ b/.gitea/workflows/lint.yml
@@ -70,6 +70,9 @@ jobs:
         with:
           node-version: '20'
 
+      - name: Fetch the base branch, so we can use `git diff`
+        run: git fetch origin ${{ env.BASE_SHA }}
+
       - name: Install npm-groovy-lint
         run: npm install -g npm-groovy-lint