[batch] add curly braces in copy statement (#9583)
[batch] add curly braces in copy statement (#9583)

* [batch] add curly braces in copy statement

* Update worker.py

per the section on grouping commands, we need spaces and semicolons https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html

Co-authored-by: Daniel King <7739259b40d3ef66b5ccc726303499d46adb7c70@gmail.com>
cseed/hail,cseed/hail,hail-is/hail,cseed/hail,danking/hail,danking/hail,hail-is/hail,hail-is/hail,cseed/hail,hail-is/hail,hail-is/hail,cseed/hail,cseed/hail,danking/hail,danking/hail,cseed/hail,danking/hail,hail-is/hail,danking/hail,hail-is/hail,hail-is/hail,danking/hail,cseed/hail,danking/hail