Omit name param from mutation when blank

As it currently sits the backend won't ignore the param. I'll be looking to
add a PR for this but for now we'll remove it.

api/queries_branch_issue_reference.go

@@ -1,18 +1,29 @@
 package api
 
-import "github.com/cli/cli/v2/internal/ghrepo"
+import (
+	"fmt"
+
+	"github.com/cli/cli/v2/internal/ghrepo"
+)
 
 type BranchIssueReference struct {
 	ID         string
 	BranchName string
 }
 
+func nameParam(params map[string]interface{}) string {
+	if params["name"] != "" {
+		return "name: $name,"
+	}
+	return ""
+}
+
 func CreateBranchIssueReference(client *Client, repo *Repository, params map[string]interface{}) (*BranchIssueReference, error) {
-	query := `
+	query := fmt.Sprintf(`
 		mutation CreateLinkedBranch($issueId: ID!, $oid: GitObjectID!, $name: String, $repositoryId: ID) {
 			createLinkedBranch(input: {
 			  issueId: $issueId,
-			  name: $name,
+			  %[1]s
 			  oid: $oid,
 			  repositoryId: $repositoryId
 			}) {
@@ -23,8 +34,7 @@ func CreateBranchIssueReference(client *Client, repo *Repository, params map[str
 					}
 				}
 			}
-		}
-	`
+		}`, nameParam(params))
 
 	inputParams := map[string]interface{}{
 		"repositoryId": repo.ID,

pkg/cmd/issue/develop/develop.go

@@ -67,7 +67,7 @@ func NewCmdDevelop(f *cmdutil.Factory, runF func(*DevelopOptions) error) *cobra.
 	fl.StringVarP(&opts.BaseBranch, "base-branch", "b", "", "Name of the base branch")
 	fl.BoolVarP(&opts.Checkout, "checkout", "c", false, "Checkout the branch after creating it")
 	fl.StringVarP(&opts.IssueRepoSelector, "issue-repo", "i", "", "Name or URL of the issue's repository")
-	fl.BoolVarP(&opts.List, "list", "l", false, "List branches for the issue")
+	fl.BoolVarP(&opts.List, "list", "l", false, "List linked branches for the issue")
 	fl.StringVarP(&opts.Name, "name", "n", "", "Name of the branch to create")
 	return cmd
 }

pkg/cmd/issue/develop/develop_test.go

@@ -215,7 +215,7 @@ func Test_developRun(t *testing.T) {
 			},
 			wantErr: "issue repo in url cli/test-repo does not match the repo from --issue-repo cli/other",
 		},
-		{name: "develop new branch",
+		{name: "develop new branch with a name provided",
 			setup: func(opts *DevelopOptions, t *testing.T) func() {
 				opts.Name = "my-branch"
 				opts.BaseBranch = "main"
@@ -240,7 +240,7 @@ func Test_developRun(t *testing.T) {
 					httpmock.StringResponse(`{"data":{"repository":{"ref":{"target":{"oid":"123"}}}}}`))
 
 				reg.Register(
-					httpmock.GraphQL(`mutation CreateLinkedBranch\b`),
+					httpmock.GraphQL(`(?s)mutation CreateLinkedBranch\b.*issueId: \$issueId,\s+name: \$name,\s+oid: \$oid,`),
 					httpmock.GraphQLQuery(`{ "data": { "createLinkedBranch": { "linkedBranch": {"id": "2", "ref": {"name": "my-branch"} } } } }`,
 						func(query string, inputs map[string]interface{}) {
 							assert.Equal(t, "REPOID", inputs["repositoryId"])
@@ -252,6 +252,43 @@ func Test_developRun(t *testing.T) {
 			},
 			expectedOut: "github.com/OWNER/REPO/tree/my-branch\n",
 		},
+		{name: "develop new branch without a name provided omits the param from the mutation",
+			setup: func(opts *DevelopOptions, t *testing.T) func() {
+				opts.Name = ""
+				opts.BaseBranch = "main"
+				opts.IssueSelector = "123"
+				return func() {}
+			},
+			httpStubs: func(reg *httpmock.Registry, t *testing.T) {
+
+				reg.Register(
+					httpmock.GraphQL(`query RepositoryInfo\b`),
+					httpmock.StringResponse(`
+						{ "data": { "repository": {
+							"id": "REPOID",
+							"hasIssuesEnabled": true
+						} } }`),
+				)
+				reg.Register(
+					httpmock.GraphQL(`query IssueByNumber\b`),
+					httpmock.StringResponse(`{"data":{"repository":{ "hasIssuesEnabled": true, "issue":{"id": "yar", "number":123, "title":"my issue"} }}}`))
+				reg.Register(
+					httpmock.GraphQL(`query BranchIssueReferenceFindBaseOid\b`),
+					httpmock.StringResponse(`{"data":{"repository":{"ref":{"target":{"oid":"123"}}}}}`))
+
+				reg.Register(
+					httpmock.GraphQL(`(?s)mutation CreateLinkedBranch\b.*issueId: \$issueId,\s+oid: \$oid,`),
+					httpmock.GraphQLQuery(`{ "data": { "createLinkedBranch": { "linkedBranch": {"id": "2", "ref": {"name": "my-issue-1"} } } } }`,
+						func(query string, inputs map[string]interface{}) {
+							assert.Equal(t, "REPOID", inputs["repositoryId"])
+							assert.Equal(t, "", inputs["name"])
+							assert.Equal(t, "yar", inputs["issueId"])
+						}),
+				)
+
+			},
+			expectedOut: "github.com/OWNER/REPO/tree/my-issue-1\n",
+		},
 		{name: "develop providing an issue url and specifying a different repo returns an error",
 			setup: func(opts *DevelopOptions, t *testing.T) func() {
 				opts.IssueSelector = "https://github.com/cli/test-repo/issues/42"