git branch --contains <commit>

This command helps you identify which local branches contain a given commit by checking the commit ancestry.

It is useful when you need to determine in which branches a specific change has been merged or applied, allowing you to manage feature branches, hotfixes, or identify redundant branches.

You can also use variations like git branch -r --contains <commit> to search through remote branches, or combine flags such as -a for both local and remote branches, and even use filtering commands like grep to narrow down the results.