I'm not in front of a testing environment right now but I desire to download a Bash script with
curl and then load its content into crontab.
The content as appears in Github raw document is for example:
0 0 * * * ... 0 0 * * 0 ...
Is this code template looks okay to you?
curl -O https://raw.githubusercontent.com/user/repo/master/file.sh | crontab