Cannot push changes to git repo
I am one of the maintainers of the package mathgl. After the last changes on
alioth I cannot push changes to the git repository. Below is what I get
$git push ssh://firstname.lastname@example.org/git/debian-
The authenticity of host 'vasks.debian.org (220.127.116.11)' can't be
RSA key fingerprint is 8c:c0:b8:9f:0a:79:ee:1c:77:c4:b8:a1:70:55:b7:31.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'vasks.debian.org,18.104.22.168' (RSA) to the list
of known hosts.
Permission denied (publickey).
fatal: The remote end hung up unexpectedly
Any help is appreciated