windows 7 64bits ,Sourcetree openssh putty GIT PULL not working?

[XiaoPeng Li]

git -c diff.mnemonicprefix=false -c core.quotepath=false fetch origin
The server's host key is not cached in the registry. You
have no guarantee that the server is the computer you

think it is.
The server's rsa2 key fingerprint is:
ssh-rsa 2048 xxxxxxxxxxxxxxxxxxxxxxxxxx
If you trust this host, enter "y" to add the key to
PuTTY's cache and carry on connecting.
If you want to carry on connecting just once, without
adding the key to the cache, enter "n".
If you do not trust this host, press Return to abandon the
connection.

[Seth]

If you are confident you are connecting to the correct host, you need to intiate an SSH connection to that server from PuTTY directly, and PuTTY will give you the option to trust the fingerprint.

[Farzad Jalali]

any chance you can provide a step by step guide please.

[finenad]

"C:\Program Files (x86)\Atlassian\SourceTree\tools\putty\plink.exe" -ssh user@github.com

[Rob Pawlikowski]

Tried. Failed. How do you indicate the host?

[Seth]

In Henrik's comment, the host is github.com. If you are connecting to a different host, that is where it goes.