/usr/share/expeyes/firmware/go-mca is in expeyes-firmware-dev 3.2.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | pushd /usr/share/expeyes/firmware
./set_fuse.sh
./upload.sh mca
python mca-test.py
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