diff --git a/alias.go b/alias.go
new file mode 100644
index 0000000..379a195
--- /dev/null
+++ b/alias.go
@@ -0,0 +1,9 @@
+package main
+
+import alias "github.com/linuxsuren/go-cli-alias/pkg"
+
+func getAliasList() []alias.Alias {
+	return []alias.Alias{
+		{Name: "cm", Command: "checkout master"},
+	}
+}
diff --git a/go.mod b/go.mod
index 6b274ae..26de2ca 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/linuxsuren/cobra-extension v0.0.5
-	github.com/linuxsuren/go-cli-alias v0.0.3
+	github.com/linuxsuren/go-cli-alias v0.0.4
 	github.com/magiconair/properties v1.8.4
 	github.com/spf13/cobra v1.1.1
 )
diff --git a/go.sum b/go.sum
index b237cd0..eb6a3e1 100644
--- a/go.sum
+++ b/go.sum
@@ -160,10 +160,15 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/linuxsuren/cobra-extension v0.0.1 h1:e288zsm1iWUaAOjfiw42hiWJsrrXZnJ0vKApWPyTfkQ=
 github.com/linuxsuren/cobra-extension v0.0.1/go.mod h1:UqHi31q7Dj+46nzcVWNZz5Z1JcHBJcmCyPAZRoM8LXo=
+github.com/linuxsuren/cobra-extension v0.0.3/go.mod h1:UqHi31q7Dj+46nzcVWNZz5Z1JcHBJcmCyPAZRoM8LXo=
 github.com/linuxsuren/cobra-extension v0.0.5 h1:3go926vpXiizRzBEwt8CddCDerRsG5hlIFr0JJvGaKc=
 github.com/linuxsuren/cobra-extension v0.0.5/go.mod h1:qcEJv7BbL0UpK6MbrTESP/nKf1+z1wQdMAnE1NBl3QQ=
+github.com/linuxsuren/go-cli-alias v0.0.3-0.20201208135826-ad33122f181c h1:YNpS+IdkZA9fvNa9gi7xA45FrVSNsEamrzdyezJndjM=
+github.com/linuxsuren/go-cli-alias v0.0.3-0.20201208135826-ad33122f181c/go.mod h1:l2/nzdvung0zorpCxI1CT+Fuuc/W1sFEWS0jt3/b2ZM=
 github.com/linuxsuren/go-cli-alias v0.0.3 h1:IbqC+4uOTCRM27WCII7Z35pXP4bwqck0J5jg2xmIqr4=
 github.com/linuxsuren/go-cli-alias v0.0.3/go.mod h1:l2/nzdvung0zorpCxI1CT+Fuuc/W1sFEWS0jt3/b2ZM=
+github.com/linuxsuren/go-cli-alias v0.0.4 h1:+otarDOeSZzzbTCr9CllAOQCQNpaf/HI41iDvWWUo/w=
+github.com/linuxsuren/go-cli-alias v0.0.4/go.mod h1:dfwOx8H0iVpdS9gtLC80GCC4cvDvzWejxjxXn7sFWUs=
 github.com/linuxsuren/go-cli-plugin v0.0.1/go.mod h1:uyO09KK8otYfDV5LVTfcWX2UbAi3kEz3PrkdfIxnDlg=
 github.com/linuxsuren/http-downloader v0.0.2-0.20201207132639-19888a6beaec h1:N6xw+W4IvgOV0cmhE7iUWKHNZqMUXlT3in+1ORmqIGo=
 github.com/linuxsuren/http-downloader v0.0.2-0.20201207132639-19888a6beaec/go.mod h1:zRZY9FCDBuYNDxbI2Ny5suasZsMk7J6q9ecQ3V3PIqI=
diff --git a/main.go b/main.go
index 51084a2..4127c21 100644
--- a/main.go
+++ b/main.go
@@ -1,10 +1,9 @@
 package main
 
 import (
-	"context"
 	"fmt"
+	ext "github.com/linuxsuren/cobra-extension"
 	extver "github.com/linuxsuren/cobra-extension/version"
-	alias "github.com/linuxsuren/go-cli-alias/pkg"
 	aliasCmd "github.com/linuxsuren/go-cli-alias/pkg/cmd"
 	"github.com/spf13/cobra"
 	"os"
@@ -13,68 +12,39 @@ import (
 	"syscall"
 )
 
+const (
+	TargetCLI = "git"
+	AliasCLI  = "cgit"
+)
+
 func main() {
 	cmd := &cobra.Command{
-		Use: "cgit",
+		Use: AliasCLI,
 		RunE: func(cmd *cobra.Command, args []string) (err error) {
 			env := os.Environ()
 
-			preferGitHub(args)
-			useMirror(args)
+			preHook(args)
 
 			var gitBinary string
-			if gitBinary, err = exec.LookPath("git"); err == nil {
-				syscall.Exec(gitBinary, append([]string{"git"}, args...), env)
+			if gitBinary, err = exec.LookPath(TargetCLI); err == nil {
+				syscall.Exec(gitBinary, append([]string{TargetCLI}, args...), env)
 			}
 			return
 		},
 	}
 
-	cmd.AddCommand(extver.NewVersionCmd("linuxsuren", "cgit", "cgit", nil))
+	cmd.AddCommand(extver.NewVersionCmd("linuxsuren", AliasCLI, AliasCLI, nil))
 
-	var ctx context.Context
-	if defMgr, err := alias.GetDefaultAliasMgrWithNameAndInitialData(cmd.Name(), []alias.Alias{
-		{Name: "cm", Command: "checkout master"},
-	}); err == nil {
-		ctx = context.WithValue(context.Background(), alias.AliasKey, defMgr)
+	aliasCmd.AddAliasCmd(cmd, getAliasList())
 
-		cmd.AddCommand(aliasCmd.NewRootCommand(ctx))
-	} else {
-		cmd.Println(fmt.Errorf("cannot get default alias manager, error: %v", err))
-	}
+	cmd.AddCommand(ext.NewCompletionCmd(cmd))
 
-	cmd.SilenceErrors = true
-	a := cmd.Execute()
-	if a != nil && strings.Contains(a.Error(), "unknown command") {
-		args := os.Args[1:]
-		var ctx context.Context
-		var defMgr *alias.DefaultAliasManager
-		var err error
-		if defMgr, err = alias.GetDefaultAliasMgrWithNameAndInitialData(cmd.Name(), []alias.Alias{
-			{Name: "cm", Command: "checkout master"},
-		}); err == nil {
-			ctx = context.WithValue(context.Background(), alias.AliasKey, defMgr)
-			var gitBinary string
-			var targetCmd []string
-			env := os.Environ()
-
-			if gitBinary, err = exec.LookPath("git"); err != nil {
-				panic("cannot find git")
-			}
-
-			if ok, redirect := aliasCmd.RedirectToAlias(ctx, args); ok {
-				args = redirect
-			}
-
-			preferGitHub(args)
-			useMirror(args)
+	aliasCmd.Execute(cmd, TargetCLI, getAliasList(), preHook)
+}
 
-			targetCmd = append([]string{"git"}, args...)
-			_ = syscall.Exec(gitBinary, targetCmd, env) // ignore the errors due to we've no power to deal with it
-		} else {
-			err = fmt.Errorf("cannot get default alias manager, error: %v", err)
-		}
-	}
+func preHook(args []string) {
+	preferGitHub(args)
+	useMirror(args)
 }
 
 func preferGitHub(args []string) {
@@ -83,7 +53,7 @@ func preferGitHub(args []string) {
 	}
 
 	address := args[1]
-	if !strings.HasPrefix(address, "http") {
+	if !strings.HasPrefix(address, "http") || !strings.HasPrefix(address, "git@") {
 		args[1] = fmt.Sprintf("https://github.com.cnpmjs.org/%s", address)
 	}
 }