Yes, you can achieve project-specific repo context by using Git submodules or Git subtrees. Git submodules allow you to include a separate repository as a subdirectory within your main repository, while Git subtrees allow you to merge the history of a separate repository into a subdirectory of your main repository. Both approaches allow you to maintain separate repositories for different projects while still being able to use them as dependencies in other projects. Here's an example of how to use Git submodules:

# Add the library repository as a submodule
$ git submodule add <library-repo-url> <path-to-submodule>

# Initialize and update the submodule
$ git submodule init
$ git submodule update

And here's an example of how to use Git subtrees:

# Add the library repository as a subtree
$ git subtree add --prefix=<path-to-subdirectory> <library-repo-url> <branch>

# Pull updates from the library repository
$ git subtree pull --prefix=<path-to-subdirectory> <library-repo-url> <branch>

By using either Git submodules or Git subtrees, you can manage separate repositories for different projects and use them as dependencies in other projects.