.git/info/refs not valid: is this a git repository?

[MarSchra]

I can't clone a repository using the git command under Ubuntu, as well as under WSL-Ubuntu.

While using Git Bash under Windows works both ways, with HTML authentication (2) and without (1) where I am asked for the password afterwards:

1. git clone https://user@git.myserver.com/Bonobo.Git.Server/Test.git
2. git clone https://user:password@git.myserver.com/Bonobo.Git.Server/Test.git

Doing the same under Ubuntu y get the message:

Cloning into 'Test'... 
fatal: https://git.myserver.com/Bonobo.Git.Server/Test.git/info/refs not valid: is this a git repository?

Note that I can ping git.myserver.com from Ubuntu. Note I changed the real names of the server and repository.

The version installed is Bonobo Git Server (6.3.0.632)

Thanks in advance for any hints and help!

Cheers