Git clone only works with ssh://git@.. and not with git@

You are using the incorrect syntax.

When you remove the scheme:// prefix, git no longer interprets your address in URL style anymore, but instead as rcp/scp style. But for rcp/scp style addresses, the path must be separated from user@host using a colon : (specifying a port is not supported). For example:

git clone daniels@server.com:repo.git

git clone git@bitbucket.com:daniels/example.git

Without the colon, git will only interpret the address as a local path.

(You can see more details in the git clone or git fetch manual page.)