Check existing branch / PR

GET http://api.bitbucket.org/2.0/repositories/{{owner}}/{{repo}}/refs/branches/updates/{{dependencyName}}

If a branch already exists, the dependency version is checked in the branch.

If the latestVersion is same as dependency version in branch/PR, it moves to next dependency.

If the latestVersion is recent than dependency version in branch/PR, it adds a new commit to the same branch.