feat: add script to automate rewriting commit dates in repository history

fix_dates.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+# Define dates
+DATE1="2016-07-24T12:00:00"
+DATE2="2020-07-25T12:00:00"
+DATE3="2020-07-26T12:00:00"
+DATE4="$(date -Iseconds)" # Today
+
+# Get commit hashes
+COMMITS=($(git rev-list --reverse HEAD))
+
+# Create a temporary branch to work on
+git checkout -b temp-rewrite
+
+# Amend each commit
+GIT_AUTHOR_DATE="$DATE1" GIT_COMMITTER_DATE="$DATE1" git commit --amend --no-edit
+git cherry-pick ${COMMITS[1]}
+GIT_AUTHOR_DATE="$DATE2" GIT_COMMITTER_DATE="$DATE2" git commit --amend --no-edit
+git cherry-pick ${COMMITS[2]}
+GIT_AUTHOR_DATE="$DATE3" GIT_COMMITTER_DATE="$DATE3" git commit --amend --no-edit
+git cherry-pick ${COMMITS[3]}
+GIT_AUTHOR_DATE="$DATE4" GIT_COMMITTER_DATE="$DATE4" git commit --amend --no-edit
+
+# Switch main to the new history
+git checkout main
+git reset --hard temp-rewrite
+git branch -D temp-rewrite