diff --git a/acceptance/testdata/repo/repo-rename-transfer-ownership.txtar b/acceptance/testdata/repo/repo-rename-transfer-ownership.txtar
new file mode 100644
index 000000000..6b1a3e3fb
--- /dev/null
+++ b/acceptance/testdata/repo/repo-rename-transfer-ownership.txtar
@@ -0,0 +1,9 @@
+# Create a repository with a file so it has a default branch
+exec gh repo create $ORG/$SCRIPT_NAME-$RANDOM_STRING --add-readme --private
+
+# Attempt to rename the repo with a slash in the name
+! exec gh repo rename $ORG/new-name --repo=$ORG/$SCRIPT_NAME-$RANDOM_STRING --yes
+stderr 'New repository name cannot contain '/' character - to transfer a repository to a new owner, you must follow additional steps on GitHub.com. For more information on transferring repository ownership, see <https://docs.github.com/en/repositories/creating-and-managing-repositories/transferring-a-repository>.'
+
+# Defer repo deletion
+defer gh repo delete $ORG/$SCRIPT_NAME-$RANDOM_STRING --yes
\ No newline at end of file
diff --git a/pkg/cmd/extension/command.go b/pkg/cmd/extension/command.go
index dad4021b6..93c385374 100644
--- a/pkg/cmd/extension/command.go
+++ b/pkg/cmd/extension/command.go
@@ -298,9 +298,18 @@ func NewCmdExtension(f *cmdutil.Factory) *cobra.Command {
 				Long: heredoc.Docf(`
 					Install a GitHub CLI extension from a GitHub or local repository.
 
-					For GitHub repositories, the repository argument can be specified in %[1]sOWNER/REPO%[1]s format or as a full repository URL.
+					For GitHub repositories, the repository argument can be specified in
+					%[1]sOWNER/REPO%[1]s format or as a full repository URL.
 					The URL format is useful when the repository is not hosted on github.com.
 
+					For remote repositories, the GitHub CLI first looks for the release artifacts assuming
+					that it's a binary extension i.e. prebuilt binaries provided as part of the release.
+					In the absence of a release, the repository itself is cloned assuming that it's a
+					script extension i.e. prebuilt executable or script exists on its root.
+
+					The %[1]s--pin%[1]s flag may be used to specify a tag or commit for binary and script
+					extensions respectively, the latest version is used otherwise.
+
 					For local repositories, often used while developing extensions, use %[1]s.%[1]s as the
 					value of the repository argument. Note the following:
 
diff --git a/pkg/cmd/extension/manager.go b/pkg/cmd/extension/manager.go
index c6947f479..b7f1f1c0c 100644
--- a/pkg/cmd/extension/manager.go
+++ b/pkg/cmd/extension/manager.go
@@ -268,7 +268,7 @@ func (m *Manager) Install(repo ghrepo.Interface, target string) error {
 		return err
 	}
 	if !hs {
-		return errors.New("extension is not installable: missing executable")
+		return fmt.Errorf("extension is not installable: no usable release artifact or script found in %s", repo)
 	}
 
 	return m.installGit(repo, target)
diff --git a/pkg/cmd/repo/rename/rename.go b/pkg/cmd/repo/rename/rename.go
index 74523e2e7..e50095d76 100644
--- a/pkg/cmd/repo/rename/rename.go
+++ b/pkg/cmd/repo/rename/rename.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"strings"
 
 	"github.com/MakeNowJust/heredoc"
 	"github.com/cli/cli/v2/api"
@@ -124,6 +125,10 @@ func renameRun(opts *RenameOptions) error {
 		}
 	}
 
+	if strings.Contains(newRepoName, "/") {
+		return fmt.Errorf("New repository name cannot contain '/' character - to transfer a repository to a new owner, you must follow additional steps on GitHub.com. For more information on transferring repository ownership, see <https://docs.github.com/en/repositories/creating-and-managing-repositories/transferring-a-repository>.")
+	}
+
 	if opts.DoConfirm {
 		var confirmed bool
 		if confirmed, err = opts.Prompter.Confirm(fmt.Sprintf(
diff --git a/pkg/cmd/repo/rename/rename_test.go b/pkg/cmd/repo/rename/rename_test.go
index da40e51b0..e33e14438 100644
--- a/pkg/cmd/repo/rename/rename_test.go
+++ b/pkg/cmd/repo/rename/rename_test.go
@@ -113,6 +113,8 @@ func TestRenameRun(t *testing.T) {
 		promptStubs func(*prompter.MockPrompter)
 		wantOut     string
 		tty         bool
+		wantErr     bool
+		errMsg      string
 	}{
 		{
 			name:    "none argument",
@@ -217,6 +219,16 @@ func TestRenameRun(t *testing.T) {
 			},
 			wantOut: "",
 		},
+
+		{
+			name: "error on name with slash",
+			tty:  true,
+			opts: RenameOptions{
+				newRepoSelector: "org/new-name",
+			},
+			wantErr: true,
+			errMsg:  "New repository name cannot contain '/' character - to transfer a repository to a new owner, you must follow additional steps on GitHub.com. For more information on transferring repository ownership, see <https://docs.github.com/en/repositories/creating-and-managing-repositories/transferring-a-repository>.",
+		},
 	}
 
 	for _, tt := range testCases {
@@ -268,6 +280,10 @@ func TestRenameRun(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			defer reg.Verify(t)
 			err := renameRun(&tt.opts)
+			if tt.wantErr {
+				assert.EqualError(t, err, tt.errMsg)
+				return
+			}
 			assert.NoError(t, err)
 			assert.Equal(t, tt.wantOut, stdout.String())
 		})