add missing docs

Author: ChristopherHX

modules/git/key.go

@@ -3,8 +3,9 @@
 
 package git
 
+// Based on https://git-scm.com/docs/git-config#Documentation/git-config.txt-gpgformat
 const (
-	// KeyTypeOpenPGP is the key type for GPG keys
+	// KeyTypeOpenPGP is the key type for GPG keys, expected default of git cli
 	KeyTypeOpenPGP = "openpgp"
 	// KeyTypeSSH is the key type for SSH keys
 	KeyTypeSSH = "ssh"

modules/setting/repository.go

@@ -255,7 +255,7 @@ var (
 			SigningKey:        "default",
 			SigningName:       "",
 			SigningEmail:      "",
-			SigningFormat:     "openpgp",
+			SigningFormat:     "openpgp", // git.KeyTypeOpenPGP
 			InitialCommit:     []string{"always"},
 			CRUDActions:       []string{"pubkey", "twofa", "parentsigned"},
 			Merges:            []string{"pubkey", "twofa", "basesigned", "commitssigned"},