Cool:
use command:
fsutil hardlink list MyFileName.txt
It lists all hardlinks to file with name MyFileName.txt.
Source: [WayBack] hardlink – How can I find hard links on Windows? – Super User
More information at [WayBack] Fsutil hardlink | Microsoft Docs on
fsutil hardlink create <NewFileName> <ExistingFileName>
fsutil hardlink list <Filename>
–jeroen