我在win7机器上使用git + ssh。当我输入'git push'时，它有时会向服务器发送提交，有时则不会。每当我无法理解时，它是否被发现。为什么会发生这种情况，我该怎么做才能解决它？
D:\project>git push Counting objects: 56, done. Delta compression using up to 4 threads. Compressing objects: 100% (28/28), done. Writing objects: 100% (29/29), 3.83 KiB, done. Total 29 (delta 27), reused 0 (delta 0) fatal: The remote end hung up unexpectedly D:\project>git push Counting objects: 56, done. Delta compression using up to 4 threads. Compressing objects: 100% (28/28), done. Writing objects: 100% (29/29), 3.83 KiB, done. Total 29 (delta 27), reused 0 (delta 0) fatal: The remote end hung up unexpectedly D:\project>git push Everything up-to-date