Set upstream to branch, pull with --rebase. Also stash/stash pop before/after.

up.sh

#!/bin/bash

# Set the `set -e` and `set -o pipefail` options to exit gracefully if any
# command fails and to propagate the exit status of a command in a pipe
set -e
set -o pipefail

# Set the remote repository name (default: origin)
REMOTE_NAME=${1:-origin}

# Get the current branch name
CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)

# Check if the upstream branch exists
if ! git show-ref --verify --quiet refs/remotes/$REMOTE_NAME/$CURRENT_BRANCH; then
  # Print an error message and exit
  echo "❌ The upstream branch '$REMOTE_NAME/$CURRENT_BRANCH' does not exist."
  echo "Exiting script."
  exit 1
fi

# Stash any local changes
echo "💾 Stashing local changes..."
git stash > /dev/null

# Set the upstream tracking branch for the current branch
echo "📡 Setting up tracking branch for $CURRENT_BRANCH..."
git branch --set-upstream-to=$REMOTE_NAME/$CURRENT_BRANCH $CURRENT_BRANCH > /dev/null

# Pull the remote changes with a rebase
echo "📥 Pulling remote changes for $CURRENT_BRANCH..."
git pull --rebase > /dev/null

# Stash pop the local changes
echo "💾 Restoring stashed local changes..."
git stash pop > /dev/null

# Print a success message
echo "✅ Done! Your local branch '$CURRENT_BRANCH' is now up to date with '$REMOTE_NAME/$CURRENT_BRANCH'."