Issue
You want to clear the build cache for your app.
Resolution
Clear The Build Cache
You can clear the build cache for an app by using the Heroku Builds plugin:
First install the plugin:
heroku plugins:install @heroku-cli/heroku-builds
Then use the following command to clear the cache:
heroku builds:cache:purge -a example-app
The cache will be rebuilt on the next deploy. If you do not have any new code to deploy, you can push an empty commit.
$ git commit --allow-empty -m "Purge cache"
$ git push heroku master
Where example-app
is replaced by the name of the app you want to clear the cache for.