I have resolved the problem. The last git version (2.13.1) has the bug - it has been released 05.06.2017. I installed previous version (2.12.2) and now all is OK.
from：https://stackoverflow.com/questions/44569450/segmentation-fault-for-git-commit-command-windows
下载最新版本的包更新就OK了
https://git-scm.com/downloads