*: update go-git import (#194)

pkg/common/git.go

@@ -12,10 +12,10 @@ import (
 	"strings"
 	"sync"
 
+	git "github.com/go-git/go-git/v5"
+	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-ini/ini"
 	log "github.com/sirupsen/logrus"
-	git "gopkg.in/src-d/go-git.v4"
-	"gopkg.in/src-d/go-git.v4/plumbing"
 )
 
 var (