Preserve host name

[remram44]

Right now the reproduced app is getting the host name "rpzdj-repl.ay" which might not work.

[remram44]

@quoideneuf oh you don't seem to be watching this repo 😅

[quoideneuf]

@remram44 - I wasn't. Just saw this comment and your other one from Friday regarding test failures. Need to check on my Github settings I think...