Most of the time if you want to drop some commit, you can use git rebase -i to drop the commit. But it is hard to using when we want to write a script to drop some commit. Because it need to select the commit to drop interactively.

So if you want to drop one commit (or some continuous commits) in a script, you can use git rebase --onto. For example, if you want to drop the commit with message your commit message, you can use the following command:

1commit=$(git log --format="%H" -1 --grep="your commit message")
2if [ -n "$commit" ]; then
3  parent_commit=$(git rev-parse "$commit"^)
4  git rebase --onto  "$parent_commit" "$commit"
5fi