diff --git a/blame.c b/blame.c
index 9c97aeca451f641ff319fc4bee70a97488e619cd..270ca52c3abf4b8d51aba4c57693f6c72800bb14 100644
--- a/blame.c
+++ b/blame.c
@@ -752,6 +752,7 @@ int main(int argc, const char **argv)
 	int found_rename;
 
 	const char* prefix = setup_git_directory();
+	git_config(git_default_config);
 
 	for(i = 1; i < argc; i++) {
 		if(options) {
diff --git a/cat-file.c b/cat-file.c
index 1a613f3ee5ab4197fe18355ae65f2c9226b348cf..761111eb0f1f3266fe6bd0e9e561ee3d3d6c21d4 100644
--- a/cat-file.c
+++ b/cat-file.c
@@ -100,6 +100,7 @@ int main(int argc, char **argv)
 	int opt;
 
 	setup_git_directory();
+	git_config(git_default_config);
 	if (argc != 3 || get_sha1(argv[2], sha1))
 		usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>");
 
diff --git a/ls-tree.c b/ls-tree.c
index d005643ee08e03be2309c02e72522c6a81e8a1c6..58663ff969b2b2b7c7065fdced06080e56e3712e 100644
--- a/ls-tree.c
+++ b/ls-tree.c
@@ -87,6 +87,7 @@ int main(int argc, const char **argv)
 	struct tree *tree;
 
 	prefix = setup_git_directory();
+	git_config(git_default_config);
 	if (prefix && *prefix)
 		chomp_prefix = strlen(prefix);
 	while (1 < argc && argv[1][0] == '-') {
diff --git a/merge-base.c b/merge-base.c
index e73fca7453e8141b3f371a1aeba483c9ed946ccc..07f5ab4d1c72afeac5e3f193cefe91801ee9a9c9 100644
--- a/merge-base.c
+++ b/merge-base.c
@@ -237,6 +237,7 @@ int main(int argc, char **argv)
 	unsigned char rev1key[20], rev2key[20];
 
 	setup_git_directory();
+	git_config(git_default_config);
 
 	while (1 < argc && argv[1][0] == '-') {
 		char *arg = argv[1];
diff --git a/name-rev.c b/name-rev.c
index 0c3f547622245a2bc8984498289e86f89f87c362..bad8a5377771e678624d01895ca0603070d6bede 100644
--- a/name-rev.c
+++ b/name-rev.c
@@ -127,6 +127,7 @@ int main(int argc, char **argv)
 	int as_is = 0, all = 0, transform_stdin = 0;
 
 	setup_git_directory();
+	git_config(git_default_config);
 
 	if (argc < 2)
 		usage(name_rev_usage);
diff --git a/read-tree.c b/read-tree.c
index 1c3b09beffdf347af40b385f632d481c99645a33..eaff4441963409ea058722ef08fcf181a34a0c96 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -717,6 +717,7 @@ int main(int argc, char **argv)
 	merge_fn_t fn = NULL;
 
 	setup_git_directory();
+	git_config(git_default_config);
 
 	newfd = hold_index_file_for_update(&cache_file, get_index_file());
 	if (newfd < 0)
diff --git a/rev-parse.c b/rev-parse.c
index f90e999e607d238fbfe17e84f286570c04844100..19a5ef7f48a722c44a3534f281581f9a6ed08e84 100644
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -166,6 +166,8 @@ int main(int argc, char **argv)
 	unsigned char sha1[20];
 	const char *prefix = setup_git_directory();
 	
+	git_config(git_default_config);
+
 	for (i = 1; i < argc; i++) {
 		struct stat st;
 		char *arg = argv[i];
diff --git a/send-pack.c b/send-pack.c
index c8ffc8d537d68e8296d8112582fd76e5148a9f98..409f18850357567748f63f73ec84c066f9e3fe94 100644
--- a/send-pack.c
+++ b/send-pack.c
@@ -362,6 +362,8 @@ int main(int argc, char **argv)
 	pid_t pid;
 
 	setup_git_directory();
+	git_config(git_default_config);
+
 	argv++;
 	for (i = 1; i < argc; i++, argv++) {
 		char *arg = *argv;
diff --git a/sha1_name.c b/sha1_name.c
index 3adaec3167d19fd9e3f2c3f6c06530583428c3c6..4f92e12a8dfce29b5bb50108468259d9f04653f3 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -236,7 +236,7 @@ static int ambiguous_path(const char *path, int len)
 static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
 {
 	static const char *fmt[] = {
-		"/%.*s",
+		"%.*s",
 		"refs/%.*s",
 		"refs/tags/%.*s",
 		"refs/heads/%.*s",
@@ -263,8 +263,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
 		pathname = git_path(*p, len, str);
 		if (!read_ref(pathname, this_result)) {
 			if (warn_ambiguous_refs) {
-				if (already_found &&
-				    !memcmp(sha1, sha1_from_ref, 20))
+				if (already_found)
 					fprintf(stderr, warning, len, str);
 				already_found++;
 			}
diff --git a/tar-tree.c b/tar-tree.c
index e478e13e283a9d9687d0b32e180558995f2b920d..92035f51d84559478033fe6c801ea18c019360b8 100644
--- a/tar-tree.c
+++ b/tar-tree.c
@@ -380,6 +380,7 @@ int main(int argc, char **argv)
 	struct tree_desc tree;
 
 	setup_git_directory();
+	git_config(git_default_config);
 
 	switch (argc) {
 	case 3:
diff --git a/unpack-file.c b/unpack-file.c
index 07303f8bb3ef2b93f3e7c9bbe116aef9660584d5..3accb974dd448233a01e82ab1d6e3599d825fa9e 100644
--- a/unpack-file.c
+++ b/unpack-file.c
@@ -30,6 +30,7 @@ int main(int argc, char **argv)
 		usage("git-unpack-file <sha1>");
 
 	setup_git_directory();
+	git_config(git_default_config);
 
 	puts(create_temp_file(sha1));
 	return 0;
diff --git a/update-ref.c b/update-ref.c
index e6fbddbab6939023c4bbea9e0b685904dc6ba0b0..ba4bf5153efb38914f66658c59784b58d8b69a0a 100644
--- a/update-ref.c
+++ b/update-ref.c
@@ -25,6 +25,7 @@ int main(int argc, char **argv)
 	int fd, written;
 
 	setup_git_directory();
+	git_config(git_default_config);
 	if (argc < 3 || argc > 4)
 		usage(git_update_ref_usage);