git fsck failures with all repos

[y]

If you enable the git option fsckobjects = true, which is recommended practice, all the vim-scripts repos fail like this:

$ git clone https://github.com/vim-scripts/scratch.vim.git
Cloning into 'scratch.vim'...
remote: Counting objects: 6, done.
remote: Total 6 (delta 0), reused 0 (delta 0), pack-reused 6
error: object 90c2bc4bfe01151aa5c71d9cb243b05bc105ae01: badTimezone: invalid author/committer line - bad time zone
fatal: Error in object
fatal: index-pack failed

[Scott Bronson]

Yep, sounds like this issue: http://vim-scripts.org/news/2011/06/23/picky-about-timezones.html

Fixing it requires regenerating every repo from the ground up.