Fix clone: use GitHub token for auth + DNS retry

.woodpecker/api.yml

@@ -5,13 +5,12 @@ when:
 clone:
   git:
     image: alpine
+    environment:
+      GITHUB_TOKEN:
+        from_secret: github-token
     commands:
       - "apk update && apk add git"
-      - "printf 'machine %s
-login %s
-password %s
-' \"$CI_NETRC_MACHINE\" \"$CI_NETRC_USERNAME\" \"$CI_NETRC_PASSWORD\" > ~/.netrc && chmod 600 ~/.netrc"
-      - 'for i in 1 2 3 4 5; do git clone "$CI_REPO_CLONE_URL" . && break || echo "Clone attempt $i failed, retrying in 10s..." && rm -rf .git && sleep 10; done'
+      - 'for i in 1 2 3 4 5; do git clone https://x-access-token:${GITHUB_TOKEN}@github.com/${CI_REPO} . && break || echo "Clone attempt $i failed, retrying in 10s..." && rm -rf .git && sleep 10; done'
       - "git checkout $CI_COMMIT_SHA"
 
 steps: