Thanks @Ron_K, but I run on the legacy platform already, but I did an update today anyway and it looks like this. (after that, I also got the same message)
*** Updating BrewPi web interface repository ***
You are on branch legacy
Available branches on the remote 'origin' for /var/www/html:
 Skip updating this repository
Enter the number of the branch you wish to update [legacy]:4
The latest commit in /var/www/html is 398f1b50c71904f69e836b26299dd178d9d4515a on Mon, 11 Jan 2016 14:16:11
The latest commit on origin/legacy is 398f1b50c71904f69e836b26299dd178d9d4515a on Mon, 11 Jan 2016 14:16:11
Your local version of /var/www/html is up to date!
No changes were made, skipping runAfterUpdate.sh.
If you encounter problems, you can start it manually with:
The update script can automatically check your controller firmware version and program it with the latest release on GitHub, would you like to do this now? [Y/n]:y
_ Stopping any running instances of BrewPi to check/update controller..._
Checking current firmware version...
_ Jan 24 2017 17:08:50 Opening serial port_
_ Found BrewPi v0.2.10 build unknown, running on an Arduino Uno with a revC shield on port /dev/ttyACM0_
_ Current firmware version on controller: 0.2.10_
Checking GitHub for available release...
 Cancel firmware update
Should I clone his (supercow) repository, or just as descripe in his Readme, copy the files in all folder.