git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCHv2] clone: fix refspec on "--single-branch" option

From
Ralf Thielow <ralf.thielow@gmail.com>
Date
Sep 14, 2012, 18:11 UTC
Message-ID
<1347646267-25891-1-git-send-email-ralf.thielow@gmail.com>
In-Reply-To
<7vipbh6qxa.fsf@alter.siamese.dyndns.org>

After a repo was cloned with the "--single-branch" option, the configured refspec looks like "+refs/heads/*:refs/remotes/origin/*". After fetching from this repo again, it'll receive all refs instead of just the ref from the single branch. Fixing this by configure exactly the ref of the branch the user specified in the "git clone" command.

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
---
Show 10 quoted lines
> Alternatively, if you can move the logic to set up this
> configuration further down so that it happens after we talked to the
> other side and figured out remote_head_points_at, you could instead
> set it up to keep a single remote tracking branch.
>
> Even if you did so, guess_remote_head() may not find any branch when
> the other repository's HEAD is detached, so you would need to decide
> what to do in such a case, and "fetch and integrate their HEAD
> without using any remote tracking branch" may be a reasonable thing
> to do in such a case.

This second version now covers also the "--single-branch" option when it was called without "--branch". It also covers the "detached HEAD" case. I've tested all the use-cases that have been described above and it works as expected with this patch. But there's just one thing. It fetches also all the tags even if they're not on this branch. I'm still in the "learning process", perhaps someone else can fix this problem or point me to the reason. I think it comes from "transport_fetch_refs(transport, mapped_refs);" on line 813 which is called with a full "+refs/heads/*:refs/remotes/origin/*" refspec. Thanks

 builtin/clone.c | 41 +++++++++++++++++++++++++++--------------
 1 Datei geändert, 27 Zeilen hinzugefügt(+), 14 Zeilen entfernt(-)
diff --git a/builtin/clone.c b/builtin/clone.c
index 5e8f3ba..3ddf5ab 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -755,20 +755,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	}
 
 	strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
-
-	if (option_mirror || !option_bare) {
-		/* Configure the remote */
-		strbuf_addf(&key, "remote.%s.fetch", option_origin);
-		git_config_set_multivar(key.buf, value.buf, "^$", 0);
-		strbuf_reset(&key);
-
-		if (option_mirror) {
-			strbuf_addf(&key, "remote.%s.mirror", option_origin);
-			git_config_set(key.buf, "true");
-			strbuf_reset(&key);
-		}
-	}
-
 	strbuf_addf(&key, "remote.%s.url", option_origin);
 	git_config_set(key.buf, repo);
 	strbuf_reset(&key);
@@ -853,6 +839,33 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 					      "refs/heads/master");
 	}
 
+	if (option_mirror || !option_bare) {
+		strbuf_reset(&value);
+		if (option_single_branch) {
+			if (option_branch)
+				strbuf_addf(&value, "+%s%s:%s%s", src_ref_prefix, option_branch,
+						branch_top.buf, option_branch);
+			else if (remote_head_points_at)
+					strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
+									branch_top.buf, prettify_refname(remote_head_points_at->name));
+		} else {
+			strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
+		}
+		/* Configure the remote */
+		if (value.len) {
+			strbuf_reset(&key);
+			strbuf_addf(&key, "remote.%s.fetch", option_origin);
+			git_config_set_multivar(key.buf, value.buf, "^$", 0);
+			strbuf_reset(&key);
+
+			if (option_mirror) {
+				strbuf_addf(&key, "remote.%s.mirror", option_origin);
+				git_config_set(key.buf, "true");
+				strbuf_reset(&key);
+			}
+		}
+	}
+
 	if (is_local)
 		clone_local(path, git_dir);
 	else if (refs && complete_refs_before_fetch)
-- 
1.7.12.395.g6b149ce.dirty
Previous: Junio C HamanoNext: Junio C Hamano
Message 10 of 39 in “is this behaviour expected for "git clone --single-branch"?”
  1. Ralf ThielowSep 13, 2012
  2. Junio C HamanoSep 13, 2012
  3. Ralf ThielowSep 13, 2012
  4. clone: fix refspec on "--single-branch" optionRalf Thielow, Sep 14, 2012
  5. Junio C HamanoSep 14, 2012
  6. Junio C HamanoSep 14, 2012
  7. Nguyen Thai Ngoc DuySep 14, 2012
  8. Ralf ThielowSep 14, 2012
  9. Junio C HamanoSep 14, 2012
  10. [PATCHv2] clone: fix refspec on "--single-branch" optionRalf Thielow, Sep 14, 2012
  11. Junio C HamanoSep 14, 2012
  12. [PATCHv3] clone: fix refspec on "--single-branch" optionRalf Thielow, Sep 14, 2012
  13. Junio C HamanoSep 14, 2012
  14. [PATCHv4] clone --single: limit the fetch refspec to fetched branchRalf Thielow, Sep 16, 2012
  15. Junio C HamanoSep 17, 2012
  16. Nguyen Thai Ngoc DuySep 17, 2012
  17. Nguyen Thai Ngoc DuySep 17, 2012
  18. [PATCHv5] clone --single: limit the fetch refspec to fetched branchRalf Thielow, Sep 17, 2012
  19. Junio C HamanoSep 17, 2012
  20. Ralf ThielowSep 17, 2012
  21. Junio C HamanoSep 17, 2012
  22. Ralf ThielowSep 18, 2012
  23. Junio C HamanoSep 18, 2012
  24. [PATCHv6] clone --single: limit the fetch refspec to fetched branchRalf Thielow, Sep 18, 2012
  25. Junio C HamanoSep 18, 2012
  26. Junio C HamanoSep 18, 2012
  27. [PATCHv7] clone --single: limit the fetch refspec to fetched branchRalf Thielow, Sep 19, 2012
  28. Junio C HamanoSep 19, 2012
  29. [PATCHv8] clone --single: limit the fetch refspec to fetched branchRalf Thielow, Sep 20, 2012
  30. Junio C HamanoSep 20, 2012
  31. Nguyen Thai Ngoc DuySep 19, 2012
  32. Ralf ThielowSep 19, 2012
  33. Junio C HamanoSep 17, 2012
  34. Nguyen Thai Ngoc DuySep 18, 2012
  35. Junio C HamanoSep 18, 2012
  36. Ralf ThielowSep 17, 2012
  37. Junio C HamanoSep 17, 2012
  38. Nguyen Thai Ngoc DuySep 18, 2012
  39. Junio C HamanoSep 14, 2012

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.