Thank you for your forum post.
Sadly there is not a command line option for Source Control for Oracle and therefore you cannot automate the check-in process.
I recommend that you comment and vote on this User Voice forum TOPIC.
The User Voice forum is preferred method for submitting Feature Requests regarding our products. The User Voice forums are actively monitored by the Product managers and development team. The more votes a topic receives will increase the chances of it being included in a future version of the product.