Those that pushed to the remote repository can not be rewound to the past state, or other members may start working. (It is possible to use supplementary git reset)
Roll back by executing the following command and pushing the processing opposite to the pushed contents.
git revert <commit id>
git revert bd912e1
When if it is merged, execute the command.
git revert-m 1 <commit_ID>
git revert-m 1 bd912e1
