robocopy C:\Folder1\ D:\Folder2\ /MIR /XO

Meaning of the options:

• /MIR: Mirrors the source to the destination. This also deletes files and directories from the destination that do not exist in the source!
• /XO: Do not recopy older files. If the destination has a file with a date equal or newer to the source, the source file is not copied again.

• https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy
• https://medium.com/@furkangozukara/how-to-mirror-a-disk-into-another-disk-by-using-robocopy-command-of-windows-f6a5f758d464