Sorry to leave this hanging, but the issue was with our server configuration. We did not have the correct sudo rights confgured

I'm not sure it's a bug. The error message was surprising; HTTP/1.0 500 Error 1: sudo: a password is required. I see a matching error message in Q261. The solution there seems to be allowing the webserver process owner to have sudo rights. I now found there are docs on the subject diffusion_hosting#configuring-sudo.

This might be useful debugging information:

>> export GIT_CURL_VERBOSE=1
>> git clone http://phabricator.internal/diffusion/TRACTORAPI/tractor-api.git
Cloning into 'tractor-api'...
* Couldn't find host phabricator.internal in the .netrc file; using defaults
* About to connect() to phabricator.internal port 80 (#0)
*   Trying 10.11.45.21... * Connected to phabricator.internal (10.11.45.21) port 80 (#0)
> GET /diffusion/TRACTORAPI/tractor-api.git/info/refs?service=git-upload-pack HTTP/1.1
User-Agent: git/2.14.1
Host: phabricator.internal
Accept: */*
Accept-Encoding: gzip
Accept-Language: en-US, *;q=0.9
Pragma: no-cache

I am currently using bookmarks to workaround the issue. I never considered using the project menu for the workboard views. This would certainly suffice, but it doesn't feel like the right place for it.