ok, so I created a branch new 0.2.0b on another bela , and same issue
I then just installed ethernet, and made sure the date was correct then...
root@bela2 ~$ apt-get update
....
Reading package lists... Done
root@bela2 ~$ sudo apt-get install zlib1g-dev libjpeg62-turbo-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package zlib1g-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
Package libjpeg62-turbo-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'zlib1g-dev' has no installation candidate
E: Package 'libjpeg62-turbo-dev' has no installation candidate
perhaps you updated your source list to included a different repo?