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To rename a branch you have to do it from within your local copy of the repository, and before pushing the change back to Bitbucket you have to remove the branch from within Bitbucket. Have a look at this thread, https://community.atlassian.com/t5/Bitbucket-questions/Is-there-a-way-to-rename-a-branch/qaq-p/751398
Beginning on April 4th, we will be implementing push limits. This means that your push cannot be completed if it is over 3.5 GB. If you do attempt to complete a push that is over 3.5 GB, it will fail...
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