fix: the pr checking out is incorrect (#34)

Co-authored-by: rick <LinuxSuRen@users.noreply.github.com>

Makefile

@@ -1,7 +1,7 @@
 build:
-	CGO_ENABLE=0 go build -ldflags "-w -s" -o bin/gogit
+	CGO_ENABLED=0 go build -ldflags "-w -s" -o bin/gogit
 plugin-build:
-	cd cmd/argoworkflow && CGO_ENABLE=0 go build -ldflags "-w -s" -o bin/gogit-executor-plugin
+	cd cmd/argoworkflow && CGO_ENABLED=0 go build -ldflags "-w -s" -o bin/gogit-executor-plugin
 copy: build
 	cp bin/gogit /usr/local/bin
 test:
@@ -12,7 +12,7 @@ goreleaser:
 image:
 	docker build . -t ghcr.io/linuxsuren/gogit
 build-workflow-executor-gogit:
-	cd cmd/argoworkflow && CGO_ENABLE=0 go build -ldflags "-w -s" -o ../../bin/workflow-executor-gogit
+	cd cmd/argoworkflow && CGO_ENABLED=0 go build -ldflags "-w -s" -o ../../bin/workflow-executor-gogit
 image-workflow-executor-gogit:
 	cd cmd/argoworkflow && docker build . -t ghcr.io/linuxsuren/workflow-executor-gogit:dev --build-arg GOPROXY=https://goproxy.io,direct
 push-image-workflow-executor-gogit: image-workflow-executor-gogit

cmd/checkout.go

@@ -126,8 +126,7 @@ func (o *checkoutOption) runE(c *cobra.Command, args []string) (err error) {
 			}
 
 			if err = wd.Checkout(&git.CheckoutOptions{
-				Create: true,
-				Branch: plumbing.NewBranchReferenceName(fmt.Sprintf("pr-%d", o.pr)),
+				Branch: plumbing.ReferenceName(fmt.Sprintf("pr-%d", o.pr)),
 			}); err != nil && !strings.Contains(err.Error(), "already exists") {
 				err = fmt.Errorf("unable to checkout git branch: %s, error: %v", o.tag, err)
 				return