I not sure when exactly -Xtheirs was added to git (~1.7.? timeframe), but it is a great and fast way to replace (overlay) all the changed files from one branch on top of another one without doing an interactive accept of each and every file, or doing a forced merge, etc… Great for document, multi-media files and other content that gets processed/accepted via a different pipeline and in a different branch and needs moved into a production/release branch.
Assuming you are already sitting in the branch that you wish to merge/replace those files into, you can do a git merge with the -Xtheirs option and supply the remote/branch that the files are coming from:
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