Since the switch to debian git-review on the guest box does not work for me:
vagrant@mediawiki-vagrant:/vagrant/mediawiki$ git review -x 348763
Cannot query patchset information
The following command failed with exit code 104
"GET https://gerrit.wikimedia.org/changes/?q=348763&o=CURRENT_REVISION"
-----------------------
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /changes/ was not found on this server.</p>
</body></html>
-----------------------https://gerrit.wikimedia.org/changes/?q=348763&o=CURRENT_REVISION does indeed not work; the correct URL seems to be https://gerrit.wikimedia.org/r/changes/?q=348763&o=CURRENT_REVISION
The git-review on my host machine works from the same directory so it seems like some kind of version incompatibility (cf T158479).