ECHO (or somehow write) hex characters to output file

I am aware that standard CMD.EXE does not support ECHOing hex codes to stdout, like

echo "\xEF\xBB\xBF" >file.txt

I expected there must be some way in swiss army knife TCC, but I haven't found one.
Can't TCC do this? (w/o relying on external progs like forfiles etc)