diff --git a/go/src/bashbrew/cmd-push.go b/go/src/bashbrew/cmd-push.go
index 87948bf..d6f7c64 100644
--- a/go/src/bashbrew/cmd-push.go
+++ b/go/src/bashbrew/cmd-push.go
@@ -16,11 +16,15 @@ func cmdPush(c *cli.Context) error {
 	}
 
 	uniq := c.Bool("uniq")
+	targetNamespace := c.String("target-namespace")
 	dryRun := c.Bool("dry-run")
 	force := c.Bool("force")
 
-	if namespace == "" {
-		return fmt.Errorf(`"--namespace" is a required flag for "push"`)
+	if targetNamespace == "" {
+		targetNamespace = namespace
+	}
+	if targetNamespace == "" {
+		return fmt.Errorf(`either "--target-namespace" or "--namespace" is a required flag for "push"`)
 	}
 
 	for _, repo := range repos {
@@ -29,7 +33,7 @@ func cmdPush(c *cli.Context) error {
 			return cli.NewMultiError(fmt.Errorf(`failed fetching repo %q`, repo), err)
 		}
 
-		tagRepo := path.Join(namespace, r.RepoName)
+		tagRepo := path.Join(targetNamespace, r.RepoName)
 		for _, entry := range r.Entries() {
 			if r.SkipConstraints(entry) {
 				continue
diff --git a/go/src/bashbrew/cmd-put-shared.go b/go/src/bashbrew/cmd-put-shared.go
index 51b2631..edb3a65 100644
--- a/go/src/bashbrew/cmd-put-shared.go
+++ b/go/src/bashbrew/cmd-put-shared.go
@@ -84,11 +84,15 @@ func cmdPutShared(c *cli.Context) error {
 	}
 
 	dryRun := c.Bool("dry-run")
+	targetNamespace := c.String("target-namespace")
 	force := c.Bool("force")
 	singleArch := c.Bool("single-arch")
 
-	if namespace == "" {
-		return fmt.Errorf(`"--namespace" is a required flag for "put-shared"`)
+	if targetNamespace == "" {
+		targetNamespace = namespace
+	}
+	if targetNamespace == "" {
+		return fmt.Errorf(`either "--target-namespace" or "--namespace" is a required flag for "put-shared"`)
 	}
 
 	for _, repo := range repos {
@@ -97,7 +101,7 @@ func cmdPutShared(c *cli.Context) error {
 			return cli.NewMultiError(fmt.Errorf(`failed fetching repo %q`, repo), err)
 		}
 
-		targetRepo := path.Join(namespace, r.RepoName)
+		targetRepo := path.Join(targetNamespace, r.RepoName)
 
 		sharedTagGroups := []manifest.SharedTagGroup{}
 
diff --git a/go/src/bashbrew/cmd-tag.go b/go/src/bashbrew/cmd-tag.go
index 05f16a7..87d408b 100644
--- a/go/src/bashbrew/cmd-tag.go
+++ b/go/src/bashbrew/cmd-tag.go
@@ -17,9 +17,6 @@ func cmdTag(c *cli.Context) error {
 	targetNamespace := c.String("target-namespace")
 	dryRun := c.Bool("dry-run")
 
-	if namespace == "" {
-		return fmt.Errorf(`"--namespace" is a required flag for "tag"`)
-	}
 	if targetNamespace == "" {
 		return fmt.Errorf(`"--target-namespace" is a required flag for "tag"`)
 	}
diff --git a/go/src/bashbrew/main.go b/go/src/bashbrew/main.go
index 86cf181..27c65a1 100644
--- a/go/src/bashbrew/main.go
+++ b/go/src/bashbrew/main.go
@@ -214,6 +214,10 @@ func main() {
 			Name:  "force",
 			Usage: "always push (skip the clever Hub API lookups that no-op things sooner if a push doesn't seem necessary)",
 		},
+		"target-namespace": cli.StringFlag{
+			Name:  "target-namespace",
+			Usage: `target namespace to act into ("docker tag namespace/repo:tag target-namespace/repo:tag", "docker push target-namespace/repo:tag")`,
+		},
 	}
 
 	app.Commands = []cli.Command{
@@ -261,10 +265,7 @@ func main() {
 				commonFlags["all"],
 				commonFlags["uniq"],
 				commonFlags["dry-run"],
-				cli.StringFlag{
-					Name:  "target-namespace",
-					Usage: `target namespace to tag into ("docker tag namespace/repo:tag target-namespace/repo:tag")`,
-				},
+				commonFlags["target-namespace"],
 			},
 			Before: subcommandBeforeFactory("tag"),
 			Action: cmdTag,
@@ -277,6 +278,7 @@ func main() {
 				commonFlags["uniq"],
 				commonFlags["dry-run"],
 				commonFlags["force"],
+				commonFlags["target-namespace"],
 			},
 			Before: subcommandBeforeFactory("push"),
 			Action: cmdPush,
@@ -288,6 +290,7 @@ func main() {
 				commonFlags["all"],
 				commonFlags["dry-run"],
 				commonFlags["force"],
+				commonFlags["target-namespace"],
 				cli.BoolFlag{
 					Name:  "single-arch",
 					Usage: `only act on the current architecture (for pushing "amd64/hello-world:latest", for example)`,