ssh: fix --sparse mode

pkg/serve/sshserver/command_push.go

@@ -196,7 +196,7 @@ func (s *Server) TagPush(e *Session, tagName string, oldRev, newRev plumbing.Has
 		Language:      e.Getenv("LANG"),
 	}
 	if tag != nil && tag.Hash != command.OldRev {
-		return e.ExitFormat(409, e.W("tag is updated, please update and try again")) //nolint:govet
+		return e.ExitFormat(409, "%s", e.W("tag is updated, please update and try again")) //nolint:govet
 	}
 	command.UpdateStats(e.Getenv("ZETA_OBJECTS_STATS"))
 	rr, err := s.open(e)
@@ -228,7 +228,7 @@ func (s *Server) BranchPush(e *Session, branchName string, oldRev, newRev plumbi
 		Language:      e.Getenv("LANG"),
 	}
 	if oldBranch != nil && oldBranch.Hash != command.OldRev {
-		return e.ExitFormat(409, e.W("branch is updated, please update and try again")) //nolint:govet
+		return e.ExitFormat(409, "%s", e.W("branch is updated, please update and try again")) //nolint:govet
 	}
 	command.UpdateStats(e.Getenv("ZETA_OBJECTS_STATS"))
 	rr, err := s.open(e)

pkg/serve/sshserver/session.go

@@ -178,7 +178,7 @@ func (e *Session) ExitError(err error) int {
 		return 409
 	default:
 		logrus.Errorf("access %s/%s internal server error: %v", e.NamespacePath, e.RepoPath, err)
-		e.WriteError(e.W("internal server error")) //nolint:govet
+		e.WriteError("%s", e.W("internal server error")) //nolint:govet
 	}
 	return 500
 }

pkg/transport/ssh/metadata.go

@@ -77,6 +77,9 @@ func (c *client) FetchMetadata(ctx context.Context, target plumbing.Hash, opts *
 	if opts.Depth != 0 {
 		psArgs = append(psArgs, "--depth="+strconv.Itoa(opts.Depth))
 	}
+	if len(opts.Sparses) != 0 {
+		psArgs = append(psArgs, "--sparse")
+	}
 	commandArgs := strings.Join(psArgs, " ")
 	cmd, err := c.NewBaseCommand(ctx)
 	if err != nil {