Git trailers are a powerful source of metadata as parsed by the Git Interpret Trailers command. Even better, trailers can be applied to commits and tags as documented here

git commit --message "Fixed log format" --trailer "Milestone: patch"

   git config user.name "Automated"
    git config user.email "actions@users.noreply.github.com"
    git add -A
    timestamp=$(date -u)
    git commit -m "Latest data: ${timestamp}" || exit 0
    git push

Manage multiple Git identities

git subtree add --prefix dir git@git.git master

Here is a way to remove non-interactively a specific <commit-id>, knowing only the <commit-id> you would like to remove:

git rebase --onto <commit-id>^ <commit-id>

git-remote-hg
git-remote-bzr