unable to access ... : gnutls_handshake() failed: Public key signature verification has failed

[quoidautre]

Hi, I want to install ccat on my new Debian Jessie 8.10 VM (using Vagrant), but there's an error :

$ go get -u github.com/jingweno/ccat
# cd .; git clone https://github.com/jingweno/ccat /home/vagrant/go/src/github.com/jingweno/ccat
Clonage dans '/home/vagrant/go/src/github.com/jingweno/ccat'...
fatal: unable to access 'https://github.com/jingweno/ccat/': gnutls_handshake() failed: Public key signature verification has failed.
package github.com/jingweno/ccat: exit status 128

Go version :

$ go version
go version go1.11.5 linux/amd64

So, have you an idea to help me please ? :)

F.