About Git subtree merges - GitHub Docs

If you need to manage multiple projects within a single repository, you can use a subtree merge to handle all the references. About subtree merges Typically, a subtree merge is used to contain a repository within a repository. The "subrepository" is stored in a folder of the main repository. The best way to explain subtree merges is to show by example. We will: Make an empty repository called test

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sub-treeで一部分だけ読めるの？