You can talk to your IT Team to provide a proxy for downloading Adobe git repo.This is followed by most of the company for security purpose.

Can you check CDN caching rule for your site?

You should configure the code structure outlined by Adobe for AEM as a Cloud pipeline. Another solution is to push code in your repo and use a build tool for packaging your code to Adobe's recommended code structure in the AEM cloud repo.

you need to check errors in aem as cloud?

Can you provide the error details?

Please provide the snippet of the error you are facing.

You can check Asset published or unpublished through Publish Asset Report:https://experienceleague.adobe.com/docs/experience-manager-learn/assets/advanced/asset-reports.html?lang=en

Check logs for errors.Also, could you share the AEM version and screenshot of the error?

Servlet : com.day.cq.wcm.core.impl.servlets.SitesExportServlet

Check shortened URL and see if it conflicts with any rule in the dispatcher.Also, see the dispatcher as well as AEM logs for any errors.