/log=G:USER_DATAUSER_USER_SYNCSFTP_LOGuser_sync_winscp.log /command "open sftp://username:password@stransfer.host.com/" "get /DATA/UserRoleUpdate.csv G:USER_DATAUSER_USER_SYNCDownload" "exit"

. 2019-08-20 08:10:23.931 Host key fingerprint is:
. 2019-08-20 08:10:23.931 ssh-rsa 2048 9b:63:5e:c4:26:bb:35:0d:49:e6:74:5e:5a:48:c0:8a bLgYggTcP4U6A/IFkFoyfY8BhlCB/+i5fFhzq1z1MjQ=
. 2019-08-20 08:10:23.931 Asking user:
. 2019-08-20 08:10:23.931 **Continue connecting to an unknown server and add its host key to a cache?** . 2019-08-20 08:10:23.931 . 2019-08-20 08:10:23.931 The server's host key was not found in the cache. You have no guarantee that the server is the computer you think it is.
. 2019-08-20 08:10:23.931
. 2019-08-20 08:10:23.931 The server's RSA key details are:
. 2019-08-20 08:10:23.931
. 2019-08-20 08:10:23.931     Algorithm:    ssh-rsa 2048
. 2019-08-20 08:10:23.931     SHA-256:  bLgYggTcP4U6A/IFkFoyfY8BhlCB/+i5fFhzq1z1MjQ=
. 2019-08-20 08:10:23.931     MD5:  9b:63:5e:c4:26:bb:35:0d:49:e6:74:5e:5a:48:c0:8a
. 2019-08-20 08:10:23.931
. 2019-08-20 08:10:23.931 If you trust this host, press Yes. To connect without adding host key to the cache, press No. To abandon the connection press Cancel.
. 2019-08-20 08:10:23.931 In scripting, you should use a -hostkey switch to configure the expected host key. () . 2019-08-20 08:10:33.933 Attempt to close connection due to fatal exception:
* 2019-08-20 08:10:33.933 Host key fingerprint is ssh-rsa 2048 bLgYggTcP4U6A/IFkFoyfY8BhlCB/+i5fFhzq1z1MjQ=.
* 2019-08-20 08:10:33.933 (Exception) **Host key wasn't verified!** . 2019-08-20 08:10:33.933 Closing connection.
. 2019-08-20 08:10:33.933 Sending special code: 12

/log=G:USER_DATAUSER_USER_SYNCSFTP_LOGuser_sync_winscp.log /command "open sftp://username:password@stransfer.host.com/" -hostkey="ssh-rsa 2048 9b:63:5e:c4:26:bb:35:0d:49:e6:74:5e:5a:48:c0:8a" "get /DATA/UserRoleUpdate.csv G:USER_DATAUSER_USER_SYNCDownload" "exit"