Current: link.

4. Click Source Code and enter the following fields:

• Repository type: Git or Subversion.
• Source repository: A URL of the repository where the software code is saved.
• Branch: An application code branch in the repository (optional).
• Root path: A root path inside the repository for the target application (optional).
  This needs to provide more guidance.  Recommend:

4. Click Source Code and enter the following fields:

• Repository type: Git or Subversion.
• Source repository: A URL of the repository where the software code is saved.
  For Subversion: this must be either the URL to the root of the repository or a fully qualified URL which (optionally) includes the branch and nested directory.  When fully qualified, the Branch and Root path must be blank.
• Branch: An application code branch in the repository (optional). 
  For Git: this may be any ref (commit-hash, branch or tag).
  For Subversion: this may be a fully qualified path to a branch or tag.  Example: branches/stable or tags/stable. This must be blank when the Source repository URL includes the branch.
• Root path: A root path inside the repository for the target application (optional).
  For Subversion: this must be blank when the Source Repository URL includes the root path.