gopkg.inからcloneしようとするとUnknown SSL protocol error in connection to gopkg.in:-9838が発生する

$ go get github.com/gernest/utron
 cd .; git clone https://gopkg.in/yaml.v2 /Users/user/go/src/gopkg.in/yaml.v2
Cloning into '/Users/user/go/src/gopkg.in/yaml.v2'...
fatal: unable to access 'https://gopkg.in/yaml.v2/': Unknown SSL protocol error in connection to gopkg.in:-9838
package gopkg.in/yaml.v2: exit status 128

$ git config --global http.sslVerify true

$ brew reinstall openssl && brew reinstall git --with-openssl

$ git clone -b v2 git@github.com:go-yaml/yaml.git $GOPATH/src/gopkg.in/yaml.v2

$ go get github.com/gernest/utron

github.com/cznic/mathutil
github.com/cznic/golex/lex
github.com/cznic/fileutil

# 省略