[PATCH] checkout: don't check worktrees when not necessary

[Spencer Baugh <sbaugh@catern.com>]

When --patch or pathspecs are passed to git checkout, the working tree
will not be switching branch, so there's no need to check if the branch
that we are running checkout on is already checked out.

Signed-off-by: Spencer Baugh <sbaugh@catern.com>
---
 builtin/checkout.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 2f92328..7039c5c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1237,6 +1237,7 @@ static int parse_branchname_arg(int argc, const char **argv,
 		char *head_ref = resolve_refdup("HEAD", 0, sha1, &flag);
 		if (head_ref &&
 		    (!(flag & REF_ISSYMREF) || strcmp(head_ref, new->path)) &&
+		    !(opts->patch_mode || opts->pathspec.nr) &&
 		    !opts->ignore_other_worktrees)
 			check_linked_checkouts(new);
 		free(head_ref);
-- 
2.4.2.339.g77bd3ea