Resets a git branch, or switches over from master to main.

git-reset-branch

#!/bin/bash
set -e

#
# NOTE: can be used to switch over to another branch such from "master" to "main"
#
#  git reset-branch main origin/main
#

if [ ! -d .git ]; then
  echo "Error: must run this script from the root of a git repository"
  exit 1
fi

# get the current branch name
branch=${1:-$(git rev-parse --abbrev-ref HEAD)}

# get tracking branch
tracking=${2:-$(git rev-parse --abbrev-ref --symbolic-full-name @{u} || echo "")}

if [[ -n "$tracking" ]]; then

  printf "\033[1;31mResetting $branch to $tracking branch.\033[0m\n"

  git reset --hard
  git checkout -b tmp
  git branch -D $branch
  git checkout -b $branch $tracking
  git branch -D tmp

else

  printf "\033[1;31mERROR: Unable to reset branch. No tracking branch to use.\033[0m\n"

fi

# clean up
git tidy &> /dev/null