It seems you are on a windows machine.
Can you execute the dos2unix utility on the shell script before you execute the shell script.
Assuming you are in the same directory as the script, please execute
$ dos2unix provision-4mv4d-field-filtering-demo.sh
$ ./provision-4mv4d-field-filtering-demo.sh
it's possible that when you cloned the repository, your line endings were changed to windows style(CRLF). Since this is a shell script executing in cygwin, you need unix style line endings(LF). The above command resets your line endings.
Another way to fix this would be to edit your gitconfig to use unix line endings and clone the repository again
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