@Brama brahim , Thanks for the question! Apologies for the delay in responding here.
To better assist you on this, could you please share more details on your deployment setup and configuration? Are you pushing to Azure App Service or leveraging Azure Notification Service?
A few things you could try to narrow-down the issue:
Kindly review for any proxy references in the Git config global file.
Validate the credentials used Git credential manager/Windows. Also, please check it it’s the right branch is 'main" or ‘master’.
Note: Kindly do not share any PII information on the public forum.
P.S. We may have to add/re-tag to receive insights from the targetted audience/SMEs.