when the git tag was created by the web-frontend, you have to do:

git fetch --tags

release new version

gradlew clean adviceRelease
fix/add unit tests
check translations
add changelog to CHANGELOG.md
add supporter to CHANGELOG.md
copy entry from CHANGELOG.md to fastlane/metadata/android/en-US/changelogs/VERSION_CODE.txt
edit gradle.build to increase version code and version name
commit changes
create tag for release
push tag to notabug.org, Github and Gitlab

push to git

https://stackoverflow.com/a/18674313

git config --global alias.pushall '!git remote | xargs -L1 git push --all'
git pushall

push tag to git

read -i "TAG: " TAG && git tag $TAG && git pushall && git push origin $TAG && git push github $TAG && git push gitlab $TAG