Git Collaboration Commands

git remote add [name] [url]: Add a new remote repository.

git remote add upstream <https://github.com/otheruser/repo.git>

git remote remove [name]: Remove a remote repository.
```
git remote remove upstream
```
git branch -r: List remote branches.
```
git branch -r
```
git pull --rebase [remote] [branch]: Fetch the remote branch and rebase the local branch onto it.
```
git pull --rebase origin main
```

git submodule add [url] [path]: Add a submodule.

git submodule add <https://github.com/username/submodule.git> submodule

git submodule update --init --recursive: Initialize, fetch, and checkout submodules.
```
git submodule update --init --recursive
```