解决Sourcetree 每次拉取提交都需要输入密码

$ git credential-osxkeychain
# Test for the cred helper
git: 'credential-osxkeychain' is not a git command. See 'git --help'.
$ curl -s -O \ https://github-media-downloads.s3.amazonaws.com/osx/git-credential-osxkeychain # Download the helper

$ chmod u+x git-credential-osxkeychain
# Fix the permissions on the file so it can be run

$ sudo mv git-credential-osxkeychain \
"$(dirname $(which git))/git-credential-osxkeychain"
# Move the helper to the path where git is installed
Password: [enter your password]

$  git config --global credential.helper osxkeychain
# Set git to use the osxkeychain credential helper