This was originally raised at https://octopusdeploy.uservoice.com/forums/170787-general/suggestions/6186352-version-control-of-deployment-scripts and closed as completed with a solution of scripting the import/export tool.

Raising as a new suggestion as this has come up as few times in support calls and some people have suggested on the original thread that the import/export tool doesn't meet their needs. (Didn't want to reopen the original thread as some people are happy with the provided solution in that thread.)

"In the Continuous Delivery book, Jez wrote that your deployment scripts should be in source control. After creating some pretty elaborate powershell scripts for Octopus, I have to agree. Losing those scripts or having them damaged would be pretty painful.
I understand Octopus has backups, but it would be better to be able to get back to a previous version or see where the script had changed. Since we use GIT, I would be completely satisfied if GIT integration was all that you supported. :) I hope this is helpful. Thanks."