TAG_FROM=0.7.38
TAG_TO=0.7.40
MAIN_BRANCH=master

git checkout $MAIN_BRANCH
git reset --hard $TAG_FROM
git reset --mixed $TAG_TO
git commit -a -m "reverting all changes between $TAG_FROM and $TAG_TO"

git rebase --strategy recursive -X theirs --onto $MAIN_BRANCH $TAG_FROM $TAG_TO
git checkout -b changes-v$TAG_FROM-v$TAG_TO
git push -u origin changes-v$TAG_FROM-v$TAG_TO