ci: clone repository explicitly

.drone.yml

@@ -4,13 +4,23 @@ kind: pipeline
 type: docker
 name: default
 
+clone:
+  disable: true
+
 steps:
+  - name: clone
+    image: alpine/git
+    commands:
+      - git clone "$DRONE_GIT_HTTP_URL" .
+      - git checkout "$DRONE_COMMIT"
+
   - name: build firmware for faderboard
     image: git.luj0ga.de/luca/docker-embedded-rust
     commands:
       - >-
         [ -z "$(git diff --name-only "$DRONE_COMMIT_BEFORE" "$DRONE_COMMIT_AFTER" | grep '^firmware/faderboard/')" ]
         && (echo "nothing to do" >&2; exit 0)
+      - cd firmware/faderboard
       - cargo build
     when:
       event: