Fix IDE commit to use start_ref
What does this MR do?
This is a quick FE fix for https://gitlab.com/gitlab-org/gitlab-ce/issues/59023.
The best fix requires BE changes up the stack, which is coming in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29598.
Does this MR meet the acceptance criteria?
- Changelog entry
- Code review guidelines
- Merge request performance guidelines
- Style guides
- Database guides
Performance and testing
- Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
- Related to #59023 (closed)