The OpenVPMS source is hosted at bitbucket.org, at https://bitbucket.org/OpenVPMS/openvpms

To contribute a change to OpenVPMS:

1. fork the repository
2. create a JIRA at https://openvpms.atlassian.net/
3. create a branch with the same name as the JIRA
4. make the change
5. send a pull request
6. wait for the change to be approved
   NOTE: we won't automatically approve changes. We may request that you make modifications, or include test cases.
   For best results, discuss changes on the developers forum or in the JIRA first.

For a tutorial on the Bitbucket workflow, see https://www.atlassian.com/git/tutorials/learn-about-code-review-in-bitbu...

For a general tutorial on Git, see https://www.atlassian.com/git/tutorials/learn-git-with-bitbucket-cloud