3 files changed, 7 insertions, 20 deletions
diff --git a/config/config.go b/config/config.go
index 477eb35..fc4cd28 100644
--- a/config/config.go
+++ b/config/config.go
@@ -65,8 +65,8 @@ type Config struct {
 // NewConfig returns a new empty Config.
 func NewConfig() *Config {
 	return &Config{
-		Remotes:    make(map[string]*RemoteConfig, 0),
-		Submodules: make(map[string]*Submodule, 0),
+		Remotes:    make(map[string]*RemoteConfig),
+		Submodules: make(map[string]*Submodule),
 		Raw:        format.New(),
 	}
 }
@@ -290,13 +290,8 @@ func (c *RemoteConfig) unmarshal(s *format.Subsection) error {
 		fetch = append(fetch, rs)
 	}
 
-	var urls []string
-	for _, f := range c.raw.Options.GetAll(urlKey) {
-		urls = append(urls, f)
-	}
-
 	c.Name = c.raw.Name
-	c.URLs = urls
+	c.URLs = append([]string(nil), c.raw.Options.GetAll(urlKey)...)
 	c.Fetch = fetch
 
 	return nil
diff --git a/config/modules.go b/config/modules.go
index 24ef304..b208984 100644
--- a/config/modules.go
+++ b/config/modules.go
@@ -24,7 +24,7 @@ type Modules struct {
 // NewModules returns a new empty Modules
 func NewModules() *Modules {
 	return &Modules{
-		Submodules: make(map[string]*Submodule, 0),
+		Submodules: make(map[string]*Submodule),
 		raw:        format.New(),
 	}
 }
diff --git a/config/refspec.go b/config/refspec.go
index 7e4106a..af7e732 100644
--- a/config/refspec.go
+++ b/config/refspec.go
@@ -51,20 +51,12 @@ func (s RefSpec) Validate() error {
 
 // IsForceUpdate returns if update is allowed in non fast-forward merges.
 func (s RefSpec) IsForceUpdate() bool {
-	if s[0] == refSpecForce[0] {
-		return true
-	}
-
-	return false
+	return s[0] == refSpecForce[0]
 }
 
 // IsDelete returns true if the refspec indicates a delete (empty src).
 func (s RefSpec) IsDelete() bool {
-	if s[0] == refSpecSeparator[0] {
-		return true
-	}
-
-	return false
+	return s[0] == refSpecSeparator[0]
 }
 
 // Src return the src side.
@@ -87,7 +79,7 @@ func (s RefSpec) Match(n plumbing.ReferenceName) bool {
 
 // IsWildcard returns true if the RefSpec contains a wildcard.
 func (s RefSpec) IsWildcard() bool {
-	return strings.Index(string(s), refSpecWildcard) != -1
+	return strings.Contains(string(s), refSpecWildcard)
 }
 
 func (s RefSpec) matchExact(n plumbing.ReferenceName) bool {