Windows 10 Professional (64 bit) 22H2 Version 10.0.19045.2130
Cygwin: CYGWIN_NT-10.0-19045 HP-Z230 3.3.6-341.x86_64 2022-09-05 11:15 UTC x86_64 Cygwin

And you?

I've seen the issue on Windows Server 2012 R2 Version 6.3 (Build 9600) and Windows Server 2019 Version 1809 (OS Build 17763.3532) with all different versions of Cygwin 3.x.x.

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We've recreated the hanging issue on Windows 2019 and were able to capture and attach a DMP file of a 'cp' command that was hanging. One other thing that we noticed is that the Cygwin commands each tend to hang about 42 or 43 seconds.