git cherry-pick 🍒 as the name implies, is a Git command that allows you to cherry-pick a specific commit from one branch and add it to another branch.
Imagine the following (simplified) scenario: Your master branch is deployed to production and your develop branch is ahead of it by 2 commits:
52a0687 Fixed search bar bugf591118 Added night modeYour users are complaining about the search bar bug which you have already fixed in develop.
You could merge or rebase the develop branch into the master branch but that would also include the "Night mode" feature which is not ready for release. You don't want that.
You want to pick just the bug-fix commit 52a0687. This is where git cherry-pick comes into play.
git checkout master - this ensures you are on the branch that will receive the commit
git cherry-pick 52a0687 - this does the actual cherry picking
Now master has the search bar bug-fix and your users are happy.
You have to keep in mind that this is a somewhat dangerous operation. You end up with the 2 branches having fundamentally different commit histories. This makes it hard to merge them in the future. In the example above, merging develop into master later on will be a challenge.
You should only cherry-pick when merge and rebase are not an option.