Nevermind, you can't do something like that with Actiobs

We must use a separate checkout for each parallel step

.github/workflows/main.yml

@@ -10,17 +10,12 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  checkout:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-
   reuse:
     runs-on: ubuntu-latest
     needs: checkout
 
     steps:
+    - uses: actions/checkout@v4
     - name: REUSE Compliance Check
       uses: fsfe/reuse-action@v3
 
@@ -29,6 +24,7 @@ jobs:
     needs: checkout
 
     steps:
+    - uses: actions/checkout@v4
     - name: Build
       run: cargo build --verbose
     - name: Run tests