Disable fast forward merging by default

Git, Configuration, Repository

Disables the default fast forwarding on merge commits.

Use git config --add merge.ff false to disable fast-forward merging for all branches, even if it is possible.
You can use the --global flag to configure this option globally.

git config [--global] --add merge.ff false

git config --global --add merge.ff false

git checkout master
git merge my-branch
# Will never fast forward even if it's possible

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