我犯了一个错误，我在分支机构开发工作，但我做了一个git push to branch master。我该怎么撤消？谢谢！
git push origin c45f349cedfc1df51300a8ebb964088c305f2567:master
WARNING
Any access or any attempt to access this machine without permission is forbidden
and could be subject to criminal and civil penalties.
To protect this system from unauthorised use, viruses and to ensure that the
system is functioning properly, security systems have been installed.
Any unauthorised attempt to stop or bypass one of these security tools is
forbidden.
ATTENTION
Tout acces ou tentative d'acces non autorisee sur ce systeme est interdit
et sujet a des poursuites penales ou civiles.
Pour proteger ce systeme des acces frauduleux et des virus, et pour assurer son
bon fonctionnement, des systemes de securites ont ete installes.
Toute tentative non autorisee pour arreter ou contourner l'un de ces
dispositifs est interdite.
Counting objects: 10, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (9/9), done.
Writing objects: 100% (10/10), 1.78 KiB | 0 bytes/s, done.
Total 10 (delta 7), reused 0 (delta 0)
To git@git.oad.exch.int:optiq/message-bus.git
0ca786a..c45f349 c45f349cedfc1df51300a8ebb964088c305f2567 -> master
答案 0 :(得分：3)
git checkout master
git log --oneline
git reset --hard lastcommit
git push -f origin master：master