allow override commit in version at build time

Author: houqp

Makefile

@@ -9,6 +9,7 @@ cover:
 
 # release:
 # 	gox -output "dist/sqlvet_{{.OS}}_{{.Arch}}" \
+# 		-ldflags "-X main.gitCommit=`git rev-list -1 HEAD`" \
 # 		-osarch="linux/amd64" \
 # 		-osarch="windows/amd64" \
 # 		-osarch="freebsd/amd64" \

main.go

@@ -18,6 +18,7 @@ import (
 const version = "1.1.1"
 
 var (
+	gitCommit     = "?"
 	flagErrFormat = false
 )
 
@@ -132,7 +133,7 @@ func main() {
 		Use:     "sqlvet PATH",
 		Short:   "Go fearless SQL",
 		Args:    cobra.ExactArgs(1),
-		Version: version,
+		Version: fmt.Sprintf("%s (%s)", version, gitCommit),
 		PreRun: func(cmd *cobra.Command, args []string) {
 			if cli.Verbose {
 				log.SetLevel(log.DebugLevel)