termui: add remote to fetch

Quick hotfix thanks to Phil.
diff --git a/termui/termui.go b/termui/termui.go
index c7d0991..d0bd130 100644
--- a/termui/termui.go
+++ b/termui/termui.go
@@ -422,7 +422,7 @@
 // getGitRefName returns a readable git ref for sha, falling back to the original sha on error.
 func getGitRefName(sha string) string {
 	// Best-effort git fetch --prune to ensure we have the latest refs
-	exec.Command("git", "fetch", "--prune").Run()
+	exec.Command("git", "fetch", "--prune", "sketch-host").Run()
 
 	// local branch or tag name
 	cmd := exec.Command("git", "rev-parse", "--abbrev-ref", sha)