Rename old Tag in the existing repo with new name

rename_tag.sh

#!/bin/bash

#*********************************************
# Rename existing Tag in the remote Repo
#
# Use:
# rename_tag.sh <old_tag> <new_tag>
#*********************************************

pwd=${PWD}

old_tag=$1
new_tag=$2

if [[ -z $old_tag ]] || [[ -z $new_tag ]]; 
  echo "Old and New tag are required parameters"
  exit()
fi;

if [[ ! -d ".git" ]]; then
  echo "Not a git repository (${pwd})"
  exit()
fi;

git fetch --all
git pull --all
git fetch origin --tags --force
git fetch origin --all

echo "Renaming Tags from ${old_tag} to ${new_tag}"

# Step 1: Create a new tag on the same commit point of old tag and push it,
git tag $new_tag $old_tag
git push --tags

# Step 2: Delete the old tag from local repo.
git tag -d $old_tag

# Step 3: Delete the old tag from remote repo.
git push origin :refs/tags/${old_tag}
# Push new tag to remote
git push origin refs/tags/${new_tag}

# You can verify the changes made, by executing the below command. It shows all remote tags:
echo "Check remote tags"
git ls-remote --tags origin