mxcl/homebrew — pull request #20757 by gisle (2013-06-24 21:59:26+00:00)
Title: Perforce has updated its client

I wasn't able to upgrade my p4 client until I fixed the checksums:

$ brew upgrade perforce
==> Upgrading 1 outdated package, with result:
perforce 2013.1.610569-x86_64
==> Upgrading perforce
==> Downloading http://filehost.perforce.com/perforce/r13.1/bin.darwin90x86_64/p4
######################################################################## 100.0%
Error: SHA1 mismatch
Expected: 8a8b349dc698699b125185e285303a4c855c4cd2
Actual: 4bba9ba354a82d62b6569d1df41b49fc5731cb52
Archive: /Library/Caches/Homebrew/perforce-2013.1.610569-x86_64
(To retry an incomplete download, remove the file above.)