diff --git a/Documentation/git-sparse-checkout.txt b/Documentation/git-sparse-checkout.txt
index 974ade2238..e6f235a0c4 100644
--- a/Documentation/git-sparse-checkout.txt
+++ b/Documentation/git-sparse-checkout.txt
@@ -41,6 +41,10 @@ COMMANDS
 To avoid interfering with other worktrees, it first enables the
 `extensions.worktreeConfig` setting and makes sure to set the
 `core.sparseCheckout` setting in the worktree-specific config file.
++
+When `--cone` is provided, the `core.sparseCheckoutCone` setting is
+also set, allowing for better performance with a limited set of
+patterns (see 'CONE PATTERN SET' below).
 
 'set'::
 	Write a set of patterns to the sparse-checkout file, as given as
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 6f6430e4e6..1aac5a56c0 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2735,6 +2735,27 @@ _git_show_branch ()
 	__git_complete_revlist
 }
 
+_git_sparse_checkout ()
+{
+	local subcommands="list init set disable"
+	local subcommand="$(__git_find_on_cmdline "$subcommands")"
+	if [ -z "$subcommand" ]; then
+		__gitcomp "$subcommands"
+		return
+	fi
+
+	case "$subcommand,$cur" in
+	init,--*)
+		__gitcomp "--cone"
+		;;
+	set,--*)
+		__gitcomp "--stdin"
+		;;
+	*)
+		;;
+	esac
+}
+
 _git_stash ()
 {
 	local save_opts='--all --keep-index --no-keep-index --quiet --patch --include-untracked'