pod 'LeanChatLib' 无法下载

-> Installing LeanChatLib (0.1.2)

Git download
Git download
$ /usr/bin/git clone https://github.com/leancloud/leanchat-ios.git1
/Users/lee/Documents/XinwsDoctor/Pods/LeanChatLib --single-branch --depth 1
--branch 0.1.2
Cloning into '/Users/lee/Documents/XinwsDoctor/Pods/LeanChatLib'...
fatal: unable to open /Users/lee/Documents/XinwsDoctor/Pods/LeanChatLib/.git/objects/pack/tmp_pack_iMoJea: No such file or directory
fatal: index-pack failed

[!] Error installing LeanChatLib
[!] /usr/bin/git clone https://github.com/leancloud/leanchat-ios.git1 /Users/lee/Documents/XinwsDoctor/Pods/LeanChatLib --single-branch --depth 1 --branch 0.1.2

Cloning into '/Users/lee/Documents/XinwsDoctor/Pods/LeanChatLib'...

fatal: unable to open /Users/lee/Documents/XinwsDoctor/Pods/LeanChatLib/.git/objects/pack/tmp_pack_iMoJea: No such file or directory

fatal: index-pack failed

你好,请指定 版本,

pod 'LeanChatLib', '0.1.6'