Problems converting SVN repo to Git repo on Windows using documentation

I’m having problems converting SVN repo to Git repo on Windows using the Gitlab documentation .

I have installed Grep and CoreUtils on Windows and added the relevant folders to my environment variables. However upon running this command to a SVN repo, I get this error.

svn log --quiet | grep -E "r[0-9]+ \| .+ \|" | cut -d'|' -f2 | sed 's/ //g' | sort | uniq
''' is not recognized as an internal or external command, operable program or batch file.

What does the error mean? Can anyone help?
Is there a way to run an equivalent command on Windows?

The grep and cut commands are recognised by Windows.