There are some git commands I often forget. Fuck that. I will write a cheatsheet to remember them.

1. Create a Upstream Remote

Here is the case. You have your local repository LA, connected to your remote repository RA, which is forked from RB, the community upstream repository.

But now you want to connect LA to RB with your local git, so that pulling from RB will be possible.

First, check existing remotes:

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git remote -v
# Expected output:
# origin  https://github.com/YourUsername/RA.git (fetch)
# origin  https://github.com/YourUsername/RA.git (push)

Next, add RB as a remote, naming it, for example, upstream:

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git remote add upstream <URL_OF_RB>

Verify that the new remote has been added:

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git remote -v
# Expected output:
# origin  https://github.com/YourUsername/RA.git (fetch)
# origin  https://github.com/YourUsername/RA.git (push)
# upstream  https://github.com/Community/RB.git (fetch)
# upstream  https://github.com/Community/RB.git (push)

Then, fetch the branches and commits from upstream:

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git fetch upstream

Create a local branch upstream-dev to track upstream/dev:

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git switch -c upstream-dev upstream/dev
# or
git checkout -b upstream-dev upstream/dev

Create the corresponding remote branch in your RA:

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git push -u origin upstream-dev:upstream-dev

Next time when you want to pull the changes from RB/dev to RA/upstream-dev, you can do:

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git switch upstream-dev
git pull upstream dev

2. I Forgot to Clone a Branch

This is very disgusting.

If you clone a repository with --branch <branchname>, git will only clone that branch, and you cannot see other branches with git branch -a.

Check your remote config:

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git config --get remote.origin.fetch
# Expected output:
# +refs/heads/main:refs/remotes/origin/main

This means that git will only fetch main branch from remote origin.

To fix this, run:

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git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
git fetch origin

Then you can see all branches with git branch -a.

Switch to your target branch:

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git switch <branchname>
# or
git checkout <branchname>