diff --git a/builder/builder.go b/builder/builder.go
index 39ca36c..b628ba5 100644
--- a/builder/builder.go
+++ b/builder/builder.go
@@ -1839,6 +1839,33 @@ func (b *Builder) SetURLRepo(name, url string) error {
 	return DNFConf.SaveTo(b.Config.Builder.DNFConf)
 }
 
+// SetExcludesRepo sets the ecludes for the repo <name> to [pkgs...]
+func (b *Builder) SetExcludesRepo(reponame, pkgs string) error {
+	if err := b.NewDNFConfIfNeeded(); err != nil {
+		return err
+	}
+
+	DNFConf, err := ini.Load(b.Config.Builder.DNFConf)
+	if err != nil {
+		return err
+	}
+
+	s, err := DNFConf.GetSection(reponame)
+	if err != nil {
+		return err
+	}
+
+	k, err := s.GetKey("excludepkgs")
+	if err != nil {
+		if k, err = DNFConf.Section(reponame).NewKey("excludepkgs", pkgs); err != nil {
+			return err
+		}
+	}
+
+	k.SetValue(pkgs)
+	return DNFConf.SaveTo(b.Config.Builder.DNFConf)
+}
+
 // RemoveRepo removes a configured repo <name> if it exists in the DNF configuration.
 // This will fail if a DNF conf has not yet been generated.
 func (b *Builder) RemoveRepo(name string) error {
diff --git a/mixer/cmd/repos.go b/mixer/cmd/repos.go
index 321759f..0e10478 100644
--- a/mixer/cmd/repos.go
+++ b/mixer/cmd/repos.go
@@ -16,6 +16,7 @@ package cmd
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/clearlinux/mixer-tools/builder"
 
@@ -66,12 +67,21 @@ var setURLRepoCmd = &cobra.Command{
 	Run:   runSetURLRepo,
 }
 
+var setExcludesRepoCmd = &cobra.Command{
+	Use:   "exclude <repo> <pkg> [<pkg>...]",
+	Short: "Exclude packages from a specified repo",
+	Long:  `Exclude packages from a specified repo. These packages will be ignored during build bundles. Globbing is supported.`,
+	Args:  cobra.MinimumNArgs(2),
+	Run:   runExcludesRepo,
+}
+
 var repoCmds = []*cobra.Command{
 	addRepoCmd,
 	removeRepoCmd,
 	listReposCmd,
 	initRepoCmd,
 	setURLRepoCmd,
+	setExcludesRepoCmd,
 }
 
 func init() {
@@ -83,6 +93,19 @@ func init() {
 	RootCmd.AddCommand(repoCmd)
 }
 
+func runExcludesRepo(cmd *cobra.Command, args []string) {
+	b, err := builder.NewFromConfig(configFile)
+	if err != nil {
+		fail(err)
+	}
+
+	err = b.SetExcludesRepo(args[0], strings.Join(args[1:], " "))
+	if err != nil {
+		fail(err)
+	}
+	fmt.Printf("Excluded packages from repo %s:\n%s\n", args[0], strings.Join(args[1:], "\n"))
+}
+
 func runAddRepo(cmd *cobra.Command, args []string) {
 	b, err := builder.NewFromConfig(configFile)
 	if err != nil {