// below, in case we already have the rev in question in the local cache.
	var ref, hash string
	if refs["refs/tags/"+rev] != "" {
		ref = "refs/tags/" + rev
		hash = refs[ref]
		// Keep rev as is: tags are assumed not to change meaning.
	} else if refs["refs/heads/"+rev] != "" {
		ref = "refs/heads/" + rev
		hash = refs[ref]
		rev = hash // Replace rev, because meaning of refs/heads/foo can change.

		{
			repo: gitrepo1,
			rev:  "latest",
			file: "README",
			data: "",
		},
		{
			repo: gitrepo1,
			rev:  "v2",
			file: "another.txt",
			data: "another\n",
		},
		{
			repo: gitrepo1,
			rev:  "v2.3.4",
			file: "another.txt",
			err:  fs.ErrNotExist.Error(),
		},
	} {
		t.Run(path.Base(tt.repo)+"/"+tt.rev+"/"+tt.file, runTest(tt))
		if tt.repo == gitrepo1 {

				}

				info, err := repo.Stat(ctx, tt.rev)
				if err != nil {
					if tt.err != "" {
						if !strings.Contains(err.Error(), tt.err) {
							t.Fatalf("repoStat(%q): %v, wanted %q", tt.rev, err, tt.err)
						}
						return
					}
					t.Fatalf("repo.Stat(%q): %v", tt.rev, err)
				}
				if tt.err != "" {
					t.Errorf("repo.Stat(%q): success, wanted error", tt.rev)
				}
				if info.Version != tt.version {

					Revision: "default",
					Reason: "No matching namespace labels (istio.io/rev=default, istio-injection=enabled) " +
						"or pod labels (istio.io/rev=default, sidecar.istio.io/inject=true)",
				},
				{
					Name:     "istio-sidecar-injector-1-16",
					Revision: "1-16",
					Reason:   "No matching namespace labels (istio.io/rev=1-16) or pod labels (istio.io/rev=1-16)",
				},
				{
					Name:     "istio-sidecar-injector-deactivated",

		statLocal: func(rev, remote string) []string {
			return []string{"hg", "log", "-l1", "-r", rev, "--template", "{node} {date|hgdate} {tags}"}
		},
		parseStat: hgParseStat,
		fetch:     []string{"hg", "pull", "-f"},
		latest:    "tip",
		readFile: func(rev, file, remote string) []string {
			return []string{"hg", "cat", "-r", rev, file}
		},
		readZip: func(rev, subdir, remote, target string) []string {

// used in pseudo-versions (12 hex digits).
func ShortenSHA1(rev string) string {
	if AllHex(rev) && len(rev) == 40 {
		return rev[:12]
	}
	return rev
}

// WorkDir returns the name of the cached work directory to use for the
// given repository type and name.
func WorkDir(ctx context.Context, typ, name string) (dir, lockfile string, err error) {
	if cfg.GOMODCACHE == "" {

			return r
		}
		if semver.Build(rev) == "+incompatible" {
			rev = rev[:len(rev)-len("+incompatible")]
		}
		if r.codeDir == "" {
			return rev
		}
		return r.codeDir + "/" + rev
	}
	return rev
}

func (r *codeRepo) versionToRev(version string) (rev string, err error) {
	if !semver.IsValid(version) {
		return "", &module.ModuleError{
			Path: r.modPath,

// GoMod is like Lookup(ctx, path).GoMod(rev) but avoids the
// repository path resolution in Lookup if the result is
// already cached on local disk.
func GoMod(ctx context.Context, path, rev string) ([]byte, error) {
	// Convert commit hash to pseudo-version
	// to increase cache hit rate.
	if !gover.ModIsValid(path, rev) {
		if _, info, err := readDiskStat(ctx, path, rev); err == nil {
			rev = info.Version
		} else {

apiVersion: v1 kind: ServiceAccount metadata: name: istio-cni namespace: kube-system labels: app: istio-cni release: istio istio.io/rev: default install.operator.istio.io/owning-resource: unknown operator.istio.io/component: "Cni" --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: istio-cni labels: app: istio-cni release: istio istio.io/rev: default install.operator.istio.io/owning-resource: unknown operator.istio.io/component: "Cni" rules: - apiGroups: [""] resources:...

                    <dependency name="mymodule2" rev="1.2"/>
                    <dependency name="mymodule2" rev="1.2" conf=""/>
                    <dependency name="mymodule2" rev="1.2" conf="a"/>
                    <dependency name="mymodule2" rev="1.2" conf="b"/>
                    <dependency name="mymodule2" rev="1.2" conf="a->other"/>
                    <dependency name="mymodule2" rev="1.2" conf="*->@"/>