Panic if tracking ref can't be reconstructed

git/objects.go

@@ -1,7 +1,6 @@
 package git
 
 import (
-	"fmt"
 	"net/url"
 	"strings"
 )
@@ -65,17 +64,6 @@ func (r TrackingRef) String() string {
 	return "refs/remotes/" + r.RemoteName + "/" + r.BranchName
 }
 
-func ParseTrackingRef(text string) (TrackingRef, error) {
-	parts := strings.SplitN(string(text), "/", 4)
-	if len(parts) != 4 {
-		return TrackingRef{}, fmt.Errorf("invalid tracking ref: %s", text)
-	}
-	return TrackingRef{
-		RemoteName: parts[2],
-		BranchName: parts[3],
-	}, nil
-}
-
 type Commit struct {
 	Sha   string
 	Title string