[PATCH] Add option -b/--branch to clone for select a new HEAD
Sometimes (especially on production systems) we need to use only one
remote branch for building software. It really annoying to clone
origin and then swith branch by hand everytime. So this patch provide
functionality to clone remote branch with one command without using
checkout after clone.
---
Documentation/git-clone.txt | 4 ++++
builtin-clone.c | 26 +++++++++++++++++++++++---
2 files changed, 27 insertions(+), 3 deletions(-)
diff --git a/Documentation/git-clone.txt b/Documentation/git-clone.txt
index 2c63a0f..50446d2 100644
--- a/Documentation/git-clone.txt
+++ b/Documentation/git-clone.txt
@@ -127,6 +127,10 @@ objects from the source repository into a pack in the cloned repository.
Instead of using the remote name 'origin' to keep track
of the upstream repository, use <name>.
+--branch <name>::
+-b <name>::
+ Instead of using the remote HEAD as master, use <name> branch.
+
--upload-pack <upload-pack>::
-u <upload-pack>::
When given, and the repository to clone from is accessed
diff --git a/builtin-clone.c b/builtin-clone.c
index 32dea74..4420c68 100644
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -41,6 +41,7 @@ static int option_quiet, option_no_checkout, option_bare, option_mirror;
static int option_local, option_no_hardlinks, option_shared;
static char *option_template, *option_reference, *option_depth;
static char *option_origin = NULL;
+static char *option_branch = NULL;
static char *option_upload_pack = "git-upload-pack";
static int option_verbose;
@@ -65,6 +66,8 @@ static struct option builtin_clone_options[] = {
"reference repository"),
OPT_STRING('o', "origin", &option_origin, "branch",
"use <branch> instead of 'origin' to track upstream"),
+ OPT_STRING('b', "branch", &option_branch, "branch",
+ "use <branch> from 'origin' as HEAD"),
OPT_STRING('u', "upload-pack", &option_upload_pack, "path",
"path to git-upload-pack on the remote"),
OPT_STRING(0, "depth", &option_depth, "depth",
@@ -347,8 +350,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
const char *repo_name, *repo, *work_tree, *git_dir;
char *path, *dir;
int dest_exists;
- const struct ref *refs, *head_points_at, *remote_head, *mapped_refs;
- struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
+ const struct ref *refs, *head_points_at, *remote_head = NULL, *mapped_refs;
+ struct strbuf key = STRBUF_INIT, value = STRBUF_INIT, branch_head = STRBUF_INIT;
struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
struct transport *transport = NULL;
char *src_ref_prefix = "refs/heads/";
@@ -372,6 +375,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
if (option_origin)
die("--bare and --origin %s options are incompatible.",
option_origin);
+ if (option_branch)
+ die("--bare and --branch %s options are incompatible.",
+ option_branch);
option_no_checkout = 1;
}
@@ -518,7 +524,21 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
mapped_refs = write_remote_refs(refs, refspec, reflog_msg.buf);
- remote_head = find_ref_by_name(refs, "HEAD");
+ if (option_branch) {
+ strbuf_addf(&branch_head, "%s%s", src_ref_prefix, option_branch);
+
+ remote_head = find_ref_by_name(refs, branch_head.buf);
+ }
+
+ if (!remote_head) {
+ if (option_branch)
+ warning("Remote branch %s not found in upstream %s"
+ ", using HEAD instead",
+ option_branch, option_origin);
+
+ remote_head = find_ref_by_name(refs, "HEAD");
+ }
+
head_points_at = guess_remote_head(remote_head, mapped_refs, 0);
}
else {
--
1.6.2
Kirill A. Korinskiy <catap@catap.ru>