tldr/pages/common/git-subtree.md

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# git subtree
> Tool to manage project dependencies as subprojects.
> More information: <https://manned.org/git-subtree.1>.
- Add a Git repository as a subtree:
`git subtree add --prefix={{path/to/directory/}} --squash {{repository_url}} {{branch_name}}`
- Update subtree repository to its latest commit:
`git subtree pull --prefix={{path/to/directory/}} {{repository_url}} {{branch_name}}`
- Merge recent changes up to the latest subtree commit into the subtree:
`git subtree merge --prefix={{path/to/directory/}} --squash {{repository_url}} {{branch_name}}`
- Push commits to a subtree repository:
`git subtree push --prefix={{path/to/directory/}} {{repository_url}} {{branch_name}}`
- Extract a new project history from the history of a subtree:
`git subtree split --prefix={{path/to/directory/}} {{repository_url}} -b {{branch_name}}`