If you need a URL, the only workaround is to point to:
https://travis-ci.org/{owner_name}/{repo_name}/branches
in which the entire history of the construction of branches will be displayed.
Otherwise, access to the history of branch construction can be achieved using the Travis CI API in JSON format (as described in GH # 1996 ), so this is:
https://api.travis-ci.org//v3/repo/{repository.id}/branch/{branch.name}
To find your repository.id , see What is the repository identifier discussed in the Travis-CI API?
kenorb
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