path: root/builtin/sparse-checkout.c
diff options
authorDerrick Stolee <>2019-11-21 22:04:35 (GMT)
committerJunio C Hamano <>2019-11-22 07:11:43 (GMT)
commitd89f09c8289a764f0a974e02bd5b38cf60d1a7d7 (patch)
treecd5b449c3ac6924fa91fd8a3380018b2ed622faf /builtin/sparse-checkout.c
parentbab3c3590879c5680060a5d5e2b93b4f97519025 (diff)
clone: add --sparse mode
When someone wants to clone a large repository, but plans to work using a sparse-checkout file, they either need to do a full checkout first and then reduce the patterns they included, or clone with --no-checkout, set up their patterns, and then run a checkout manually. This requires knowing a lot about the repo shape and how sparse-checkout works. Add a new '--sparse' option to 'git clone' that initializes the sparse-checkout file to include the following patterns: /* !/*/ These patterns include every file in the root directory, but no directories. This allows a repo to include files like a README or a bootstrapping script to grow enlistments from that point. During the 'git sparse-checkout init' call, we must first look to see if HEAD is valid, since 'git clone' does not have a valid HEAD at the point where it initializes the sparse-checkout. The following checkout within the clone command will create the HEAD ref and update the working directory correctly. Signed-off-by: Derrick Stolee <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'builtin/sparse-checkout.c')
1 files changed, 6 insertions, 0 deletions
diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
index fcf97e9..e3418fb 100644
--- a/builtin/sparse-checkout.c
+++ b/builtin/sparse-checkout.c
@@ -102,6 +102,7 @@ static int sparse_checkout_init(int argc, const char **argv)
char *sparse_filename;
FILE *fp;
int res;
+ struct object_id oid;
if (set_config(MODE_ALL_PATTERNS))
return 1;
@@ -126,6 +127,11 @@ static int sparse_checkout_init(int argc, const char **argv)
fprintf(fp, "/*\n!/*/\n");
+ if (get_oid("HEAD", &oid)) {
+ /* assume we are in a fresh repo */
+ return 0;
+ }
return update_working_directory();