correct sha1

the sha1 seems to be wrong:


kmulvey@deepthought: ~ (mac)> brew upgrade
==> Upgrading 1 outdated package, with result:
rock-cli 0.18.1
==> Upgrading rock-cli
==> Downloading https://pypi.python.org/packages/source/r/rock/rock-0.18.1.tar.gz
######################################################################## 100.0%
Error: SHA1 mismatch
Expected: 214e13e4a248133ddefd8acc3b637e62c8076ca9
Actual: 643940afc92cc2a90323dfd09482bd82d2ee296e
Archive: /Library/Caches/Homebrew/rock-cli-0.18.1.tar.gz
(To retry an incomplete download, remove the file above.)


kmulvey@deepthought: ~ (mac)> wget -c https://pypi.python.org/packages/source/r/rock/rock-0.18.1.tar.gz
--2014-02-03 10:36:49--  https://pypi.python.org/packages/source/r/rock/rock-0.18.1.tar.gz
Resolving pypi.python.org... 199.27.72.185, 199.27.76.185
Connecting to pypi.python.org|199.27.72.185|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 15360 (15K) [application/octet-stream]
Saving to: 'rock-0.18.1.tar.gz'

100%[========================================================================================================================================>] 15,360      --.-K/s   in 0.02s   

2014-02-03 10:36:50 (642 KB/s) - 'rock-0.18.1.tar.gz' saved [15360/15360]

kmulvey@deepthought: ~ (mac)> shasum -a1 rock-0.18.1.tar.gz 
643940afc92cc2a90323dfd09482bd82d2ee296e  rock-0.18.1.tar.gz