CI: Fix branch artifacts naming and submodules in the linter (#605)

* Fix branch artifacts naming
* Port submodules fix from build.yml
* Github: port decontamination to python lint action
* Github: skip decontamination on non existing repos
* Github: skip submodules python lint

Co-authored-by: あく <alleteam@gmail.com>

.github/workflows/lint_c.yml

@@ -12,16 +12,19 @@ jobs:
       - name: 'Cleanup workspace'
         uses: AutoModality/action-clean@v1
 
+      - name: 'Decontaminate previous build leftovers'
+        run: |
+          if [ -d .git ]
+          then
+            git submodule status \
+              || git checkout `git rev-list --max-parents=0 HEAD | tail -n 1`
+          fi
+
       - name: 'Checkout code'
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
-
-      - name: 'Checkout submodules: update'
-        run: git submodule update --init --recursive
-
-      - name: 'Checkout submodules: sync'
-        run: git submodule sync
+          submodules: true
 
       - name: 'Docker cache'
         uses: satackey/action-docker-layer-caching@v0.0.11