How to get only the latest commit hash of a branch without cloning the repo?

[rosarava]

I have a use case where I need only the latest commit hash. I don't want to clone the complete repo as some repos may be larger in size. How can I do that? Should I need to modify set a field in the CloneOptions?

[KacperPerschke]

Recipy

1. Take _examples/ls-remote.
2. Apply given patch
3. Enjoy

Patch to apply

11c11
< // Retrieve remote tags without cloning repository
---
> // Retrieve remote branches without cloning repository
20c20
< 	log.Print("Fetching tags...")
---
> 	log.Print("Fetching branches…")
28,29c28,29
< 	// Filters the references list and only keeps tags
< 	var tags []string
---
> 	// Filters the references list and only keeps branches
> 	var branches []string
31,32c31,32
< 		if ref.Name().IsTag() {
< 			tags = append(tags, ref.Name().Short())
---
> 		if ref.Name().IsBranch() {
> 			branches = append(branches, ref.Hash().String(), ref.Name().Short())
36,37c36,37
< 	if len(tags) == 0 {
< 		log.Println("No tags!")
---
> 	if len(branches) == 0 {
> 		log.Println("No branches!")
41c41
< 	log.Printf("Tags found: %v", tags)
---
> 	log.Printf("Branches found: %v", branches)