[build2] Using ssh-git

[Boris Kolpackov]

Bo Lorentsen <bl at lue.dk> writes:

> The problem here is, that even though we have stored the credentials, the
> repository needs to set op credential store explicitly per cloned repos.
> 
> So every time bpkg makes a temp git clone, we need to enter username
> password, or bpkg could run the `git config credential.helper store`on all
> new git repos. That way we will only be asked once per git remote.

Wouldn't setting credential.helper as a global value help (taken from
gitcredential(1)):

$ git config --global credential.helper ...