l10n: zh_CN.po: translate 29 new messages
l10n: zh_CN.po: translate 29 new messages

Translate 29 new messages came from git.pot update in 11b9017
(l10n: Update git.pot (29 new messages))

Signed-off-by: Jiang Xin <61b5e6324abee2d58ba2cf49f31c723faf6fd946@gmail.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git