A shorter example:

git clone https://codeberg.org/yourname/yournewrepo
cd yournewrepo
git reset --hard abcdef1 # commit that you want to reset to
git push --force origin

Note that instead of abcdef1 in git reset you can also use the regular expression syntax. So if the commit was named Last release before unwanted changes you would say git reset --hard ':/Last release before unwanted changes'.