Golang : missing Git command

Problem :

Attempt go get some package failed because Git is missing.

For example :

go: missing Git command. See http://golang.org/s/gogetcmd

package github.com/go-sql-driver/mysql: exec: "git": executable file not found in $PATH

Solution :

Your local machine does not have Git installed. Download and install Git from http://git-scm.com/downloads

After installing Git, rerun the go get command again.