You can manually set the codepage to UTF-8 by typing chcp 65001 at the top of your batch file.
Unicode symbols in a batch file – Stack Overflow
Posted by jpluimers on 2022/06/30
Even with a batch file saved as UTF-8 (with or without BOM), by default it does not show most non-ASCII Unicode characters.
The reason is that the default codepage usually is an ANSI one like codepage 437.
Thanks [Wayback] niutech for answering [Wayback/Archive.is] Unicode symbols in a batch file – Stack Overflow:
Codepage 65001 is Windows speak for the UTF-8 code page. I have some more blog entries mentioning codepage 65001.
An example where I needed this was to show how to address the localghost from a batch file (see The spookback localghost address to resolve 👻). This was the resulting UTF-8 saved batch file:
chcp 65001 ping 👻 ping xn--9q8h
For single-byte non-ASCII characters, you can usually get away with setting the encoding of your batch file to your default code page as mentioned in [Wayback/Archive.is] cmd – Using box-drawing Unicode characters in batch files – Stack Overflow.
–jeroen
The Wiert Corner - irregular stream of stuff 
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