Provide a parameter to config ssh options

[isc-afuentes]

Currently ssh command is like:

set newArgs($increment(newArgs)) = "core.sshCommand=ssh -F /dev/null -o StrictHostKeyChecking=accept-new -i "_privateKeyFile

• See https://github.com/intersystems/git-source-control/blob/main/cls/SourceControl/Git/Utils.cls#L1464C13-L1464C137
• This is setting ssh config file (-F) to /dev/null

In some cases you need to specify a ssh config file to specify additional parameters.

For instance, to connect some Git repos hosted in a TFS server we realised we needed to specify:

Host somehost
HostName somehost
IdentityFile C:\Users\someuser\.ssh\id_rsa
IdentitiesOnly yes
HostkeyAlgorithms +ssh-rsa
PubkeyAcceptedKeyTypes=ssh-rsa
KexAlgorithms +diffie-hellman-group1-sha1,diffie-hellman-group14-sha1
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc

It would be great to have some parameter to specify the ssh config file to use (or no -F option at all so default is used).

[isc-pbarton]

Ran into this with another customer last week. If we can set an SSH config file, that will allow organizations to use GitHub remotes with SSH even if they block outgoing traffic over port 22. See https://docs.github.com/en/authentication/troubleshooting-ssh/using-ssh-over-the-https-port#enabling-ssh-connections-over-https