Git helpers to checkout collaborator branches from the main or forked repos

github_checkout_remote.sh

# Example usage: gcor feature-branch
# This will create a local branch 'feature-branch' based on 'origin/feature-branch'
function gcor {
    # Create a new branch locally based on a remote branch from origin
    git checkout -b $1 origin/$1

    # Set the upstream branch for the new local branch to track the remote branch
    git branch --set-upstream-to=origin/$1 $1
}

# Example usage: gcorfork username main
# This will automatically add the forked remote 'username' based on the current repo's URL,
# fetch 'main' from 'username', and create a local branch 'username-main'
function gcorfork() {
    # Extract the current repo's URL
    repo_url=$(git config --get remote.origin.url)

    # Replace the username (between 'github.com/' and the repo name) with the fork's username
    fork_url=$(echo $repo_url | sed "s|github.com/[^/]*|github.com/$1|")

    # Add the remote for the fork if it doesn't already exist
    git remote add $1 $fork_url 2>/dev/null

    # Fetch the branch from the forked remote
    git fetch $1

    # Create a local branch with a hyphen instead of a slash (e.g., 'username-main')
    local_branch_name="$1-$2"
    git checkout -b $local_branch_name $1/$2

    # Set the upstream to track the fork's branch
    git branch --set-upstream-to=$1/$2 $local_branch_name
}

Clever

    # Create a new branch locally based on a remote branch from origin
    git checkout -b $1 origin/$1

    # Set the upstream branch for the new local branch to track the remote branch
    git branch --set-upstream-to=origin/$1 $1

Isn't this the same like doing git checkout origin/$1?