Hi, You need to restart the VM client daemon service on esxi host to stop the progress.
Take SSH and run the following command
Please Mark Helpful/correct if my answer resolve your query.
There are backup tools which will do the equivalent of that for you automatically while the VM is running.
Veeam is a popular option: Veeam Editions Comparison
But then you should know that from a previous thread of yours: Can't download entire folder from ESXi 6.5 datastore