git pull fatal: Out of memory, malloc failed (tried to allocate 524288880 bytes)

git 拉取更新时，发现报错如下：

fatal: Out of memory, malloc failed (tried to allocate 524288880 bytes)
fatal: Could not read from remote repository .
please make sure you have the correct access rightsand the repository exists.

• 查看git配置。可能是'http.postbuffer'设置过大

git config --list --show-origin

• 修改'http.postbuffer'

git config --global  http.postbuffer 128m

• 重新执行命令