Reverting to first revision, temporarily

[Krilin Wantun]

Hello, I need to install in a server the original version of a project, 
but after that I need to keep working on the last revision,

Is there a straight way to temporarily revert to first revision and then 
get back to the last one and keep working?

(the way I would do it now is: copy the whole project in a new folder, 
revert to first revision, ftp first revision to server, copy back the 
last version)

Thank you