git rebase -i <initial_commit_hash_to_rebase> -x <full_path_to_bulkCommitRename.sh>

bulkCommitRename.sh

#!/bin/bash
# Author: Alvaro Merino Garcia
# The purpose of this script is to use it as param of rebase -x "this script using full path"
# to process a bulk rename of commits

STRING_TO_BE_REPLACED="STRY0000000"
DESIRED_STRING_USING_IN_REPLACE="STRY1111111"

# Retrieve actual commit message using git log -1
COMMIT_MSG="$(git log --pretty=format:%s -1)"
# Transform the commit msg using sed
DESIRED_COMMIT_MSG="$(sed s/${STRING_TO_BE_REPLACED}/${DESIRED_STRING_USING_IN_REPLACE}/g <<< ${COMMIT_MSG})"
# Commit amend with desired commit msg
git commit --amend --no-edit -m "${DESIRED_COMMIT_MSG}"