gogs: Windows SSH: Error on handshaking. Auth fail

• Gogs version (or commit ref): 0.9.128.0131
• Git version: 2.10.1.windows.1
• Operating system: Windows Server 2012 R2
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • SQLite
• Can you reproduce the bug at https://try.gogs.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist (usually found in log/gogs.log): https://gist.github.com/duongphuhiep/aca479b8973f50dac06a0a4d7d6cbf16#file-gogs-log

Description

Each time I made communication with the server (via ssh), for example: git pull origin master, I have to repeat the same command multiple time before it decide to work. it always says “Server denied authentication”, but if I keep on repeating the command, it will success.

> git pull origin master
Server denied authentication request: 20
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

 
> git pull origin master
From git.myserver.com:MyCompany/MyApp
 * branch            master     -> FETCH_HEAD
Already up-to-date.

Update: we do not have this problem before (I think that the version 0.9.97.0901 didn’t have this problem)