[Git] Git Switch & Fetch & Pull

Git Switch & Fetch & Pull

• Remote Tracking Branches
• Git Switch
• Git Fetch
• Git Pull

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Remote Tracking Branches

• Where the branch was pointing at the time the user last communicated with the remote repository
• The pattern is {remote}/{branch_name}
  • e.g. origin/master

# view the remote branches the local repository knows about
git branch -r

# move to the branch where the remote tracking HEAD is pointing to (git checkout {remote}/{branch_name})
git checkout origin/master

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Git Switch

• Create new local branch from the remote branch of the same name & set up to track the remote branch(link the branch with the remote branch)
• It is possible to move to the branch with git checkout {remote}/{branch_name}
  • But in this case, it will be a detached HEAD

# git switch {branch_name}
git switch feat/branch_name

# same as above(git checkout --track {remote}/{branch_name})
git checkout --track feat/branch_name

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Git Fetch

• Fetching allows us to download changes from a remote repository
• However, those changes will not be automatically integrated into the working files
• In Short, git fetch {remote}retrieves the latest information from remote repository(e.g GitHub) but doesn’t affect the working files
• Latest information includes new branches, and commits(files) inside the branches

# git fetch {remote}, if remote is not specified origin is the default
git fetch origin
# same as above
git fetch

# fetch as specific branch (git Fetch {remote} {branch})
git fetch origin feat/branch_name

# go to that branch(in a 'detached HEAD' state)
git checkout feat/branch_name

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Git Pull

• Retrieve changes from a remote repository, and updates the HEAD branch
  • Similar to git fetch + git merge
• It matters on which branch this command is executed

# git pull {remote} {branch}
# fetch the lastest information from the origin's master branch and merge those changes into the current branch
git pull origin master

# git pull
# the default remote: is origin
# the default branch: the tracking connection configured to the current branch

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