Thank you for asking this question on the **Microsoft Q&A Platform. **
By default, the blob storage does not have the capacity to edit the name of the file that you upload.
If you try to upload a file with the same name, the Storage Account won't allow it
Can that be some behavior of your application?
Hope this helps!
----------
Accept Answer and Upvote, if any of the above helped, this thread can help others in the community looking for remediation for similar issues.
NOTE: To answer you as quickly as possible, please mention me in your reply.