Mercurial error while connectin on Bitbucket after updating TLS

So bitbucket upgade his TLS version and now I have problem pulling from bitbucket repos. I have only one server affected and I can't figure out what is wrong.
The error is
[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:581)

I have Debian 8.7 and Mercurial 3.1.2. I tried to remove/purge the package and reinstall it, no way. I did update some tls libraries too.
I can't upggrade the distro cause I need these exact versions of php and mysql.