Of course you can change when the job runs. If you aren't familiar with that syntax visit this page: http://www.howtoforge.com/a-short-introduction-to-cron-jobs
The script now calls another script, which needs to be located in ~/.minetest/mods and called rename.sh
Sample script for the rename script:
rm -rf mesecons
mv minetest-mod-mesecons mesecons
Just duplicate these two lines as you need to. The first line deletes the original folder, and the second renames the folder from GIT to the name the mod needs.