New builds fail with error fetching branch, but "clear cache & deploy site" succeeds

[serhat]

I had same issue

Hugo build fails without clearing cache

Btw I read the below guide but none of the options below apply to my site since I have a HUGO builder therefore I don’t have any node_modules nor package.json nor yarn.lock. https://answers.netlify.com/t/support-guide-my-site-deploy-fails-unless-netlifys-build-cache-is-cleared/3035