UPGRADE FROM 1.0 to 2.0

{
  "name": "foo/bar",
  "require": {
-    "pact-foundation/composer-downloads-plugin": "^1.0"
+    "pact-foundation/composer-downloads-plugin": "^2.0"
  },
  "extra": {
    "downloads": {
      "examplelib": {
-        "url": "https://example.com/file.ext",
+        "url": "https://example.com/new-file.ext",
        "path": "files/file.txt"
      }
    }
  }
}

Because of tracking file has been changed, https://example.com/new-file.ext will not be downloaded. There will be an warning on your terminal:

Extra file foo/bar:examplelib has been locally overriden in files/file.txt. To reset it, delete and reinstall.

You need to run one of these commands:

composer reinstall foo/bar
rm vendor/foo/bar/files/file.txt & composer update foo/bar