title: How to completely replace master with another branch in Azure DevOps
body: <p>Using Azure DevOps, there is a repo with valid code being maintained in a secondary branch. However, the master branch is multiple years out of date.</p>
  
  <p>I want to obliterate the contents of master and overwrite it with the contents of the secondary branch.</p>
  
  <p>I understand that mishandling this can cause serious namespaces issues and I would like to avoid that.</p>
  
  <p>What method would you recommend for completely replacing master with a secondary branch in Azure DevOps?</p>