diff --git a/pkg/commands/sync.go b/pkg/commands/sync.go
index 7de5b8efd..583987625 100644
--- a/pkg/commands/sync.go
+++ b/pkg/commands/sync.go
@@ -37,10 +37,10 @@ func (c *GitCommand) Fetch(opts FetchOptions) error {
 	command := "git fetch"
 
 	if opts.RemoteName != "" {
-		command = fmt.Sprintf("%s %s", command, opts.RemoteName)
+		command = fmt.Sprintf("%s %s", command, c.OSCommand.Quote(opts.RemoteName))
 	}
 	if opts.BranchName != "" {
-		command = fmt.Sprintf("%s %s", command, opts.BranchName)
+		command = fmt.Sprintf("%s %s", command, c.OSCommand.Quote(opts.BranchName))
 	}
 
 	return c.OSCommand.DetectUnamePass(command, func(question string) string {
@@ -52,12 +52,12 @@ func (c *GitCommand) Fetch(opts FetchOptions) error {
 }
 
 func (c *GitCommand) FastForward(branchName string, remoteName string, remoteBranchName string, promptUserForCredential func(string) string) error {
-	command := fmt.Sprintf("git fetch %s %s:%s", remoteName, remoteBranchName, branchName)
+	command := fmt.Sprintf("git fetch %s %s:%s", c.OSCommand.Quote(remoteName), c.OSCommand.Quote(remoteBranchName), c.OSCommand.Quote(branchName))
 	return c.OSCommand.DetectUnamePass(command, promptUserForCredential)
 }
 
 func (c *GitCommand) FetchRemote(remoteName string, promptUserForCredential func(string) string) error {
-	command := fmt.Sprintf("git fetch %s", remoteName)
+	command := fmt.Sprintf("git fetch %s", c.OSCommand.Quote(remoteName))
 	return c.OSCommand.DetectUnamePass(command, promptUserForCredential)
 }