diff --git a/Documentation/config.txt b/Documentation/config.txt
index 939cc1387992f8..dc6d94a16f7f47 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -524,6 +524,8 @@ include::config/sequencer.txt[]
 
 include::config/showbranch.txt[]
 
+include::config/sideband.txt[]
+
 include::config/sparse.txt[]
 
 include::config/splitindex.txt[]
diff --git a/Documentation/config/credential.txt b/Documentation/config/credential.txt
index 470482ff4c2a38..80a7c777720793 100644
--- a/Documentation/config/credential.txt
+++ b/Documentation/config/credential.txt
@@ -22,6 +22,17 @@ credential.useHttpPath::
 	or https URL to be important. Defaults to false. See
 	linkgit:gitcredentials[7] for more information.
 
+credential.sanitizePrompt::
+	By default, user names and hosts that are shown as part of the
+	password prompt are not allowed to contain control characters (they
+	will be URL-encoded by default). Configure this setting to `false` to
+	override that behavior.
+
+credential.protectProtocol::
+	By default, Carriage Return characters are not allowed in the protocol
+	that is used when Git talks to a credential helper. This setting allows
+	users to override this default.
+
 credential.username::
 	If no username is set for a network authentication, use this username
 	by default. See credential.<context>.* below, and
diff --git a/Documentation/config/sideband.txt b/Documentation/config/sideband.txt
new file mode 100644
index 00000000000000..f347fd6b33004a
--- /dev/null
+++ b/Documentation/config/sideband.txt
@@ -0,0 +1,16 @@
+sideband.allowControlCharacters::
+	By default, control characters that are delivered via the sideband
+	are masked, except ANSI color sequences. This prevents potentially
+	unwanted ANSI escape sequences from being sent to the terminal. Use
+	this config setting to override this behavior:
++
+--
+	color::
+		Allow ANSI color sequences, line feeds and horizontal tabs,
+		but mask all other control characters. This is the default.
+	false::
+		Mask all control characters other than line feeds and
+		horizontal tabs.
+	true::
+		Allow all control characters to be sent to the terminal.
+--
diff --git a/credential.c b/credential.c
index 6dea3859ece338..b3e851f7374a7c 100644
--- a/credential.c
+++ b/credential.c
@@ -129,6 +129,10 @@ static int credential_config_callback(const char *var, const char *value,
 	}
 	else if (!strcmp(key, "usehttppath"))
 		c->use_http_path = git_config_bool(var, value);
+	else if (!strcmp(key, "sanitizeprompt"))
+		c->sanitize_prompt = git_config_bool(var, value);
+	else if (!strcmp(key, "protectprotocol"))
+		c->protect_protocol = git_config_bool(var, value);
 
 	return 0;
 }
@@ -226,7 +230,8 @@ static void credential_format(struct credential *c, struct strbuf *out)
 		strbuf_addch(out, '@');
 	}
 	if (c->host)
-		strbuf_addstr(out, c->host);
+		strbuf_add_percentencode(out, c->host,
+					 STRBUF_ENCODE_HOST_AND_PORT);
 	if (c->path) {
 		strbuf_addch(out, '/');
 		strbuf_add_percentencode(out, c->path, 0);
@@ -240,7 +245,10 @@ static char *credential_ask_one(const char *what, struct credential *c,
 	struct strbuf prompt = STRBUF_INIT;
 	char *r;
 
-	credential_describe(c, &desc);
+	if (c->sanitize_prompt)
+		credential_format(c, &desc);
+	else
+		credential_describe(c, &desc);
 	if (desc.len)
 		strbuf_addf(&prompt, "%s for '%s': ", what, desc.buf);
 	else
@@ -381,7 +389,8 @@ int credential_read(struct credential *c, FILE *fp,
 	return 0;
 }
 
-static void credential_write_item(FILE *fp, const char *key, const char *value,
+static void credential_write_item(const struct credential *c,
+				  FILE *fp, const char *key, const char *value,
 				  int required)
 {
 	if (!value && required)
@@ -390,6 +399,10 @@ static void credential_write_item(FILE *fp, const char *key, const char *value,
 		return;
 	if (strchr(value, '\n'))
 		die("credential value for %s contains newline", key);
+	if (c->protect_protocol && strchr(value, '\r'))
+		die("credential value for %s contains carriage return\n"
+		    "If this is intended, set `credential.protectProtocol=false`",
+		    key);
 	fprintf(fp, "%s=%s\n", key, value);
 }
 
@@ -397,34 +410,34 @@ void credential_write(const struct credential *c, FILE *fp,
 		      enum credential_op_type op_type)
 {
 	if (credential_has_capability(&c->capa_authtype, op_type))
-		credential_write_item(fp, "capability[]", "authtype", 0);
+		credential_write_item(c, fp, "capability[]", "authtype", 0);
 	if (credential_has_capability(&c->capa_state, op_type))
-		credential_write_item(fp, "capability[]", "state", 0);
+		credential_write_item(c, fp, "capability[]", "state", 0);
 
 	if (credential_has_capability(&c->capa_authtype, op_type)) {
-		credential_write_item(fp, "authtype", c->authtype, 0);
-		credential_write_item(fp, "credential", c->credential, 0);
+		credential_write_item(c, fp, "authtype", c->authtype, 0);
+		credential_write_item(c, fp, "credential", c->credential, 0);
 		if (c->ephemeral)
-			credential_write_item(fp, "ephemeral", "1", 0);
+			credential_write_item(c, fp, "ephemeral", "1", 0);
 	}
-	credential_write_item(fp, "protocol", c->protocol, 1);
-	credential_write_item(fp, "host", c->host, 1);
-	credential_write_item(fp, "path", c->path, 0);
-	credential_write_item(fp, "username", c->username, 0);
-	credential_write_item(fp, "password", c->password, 0);
-	credential_write_item(fp, "oauth_refresh_token", c->oauth_refresh_token, 0);
+	credential_write_item(c, fp, "protocol", c->protocol, 1);
+	credential_write_item(c, fp, "host", c->host, 1);
+	credential_write_item(c, fp, "path", c->path, 0);
+	credential_write_item(c, fp, "username", c->username, 0);
+	credential_write_item(c, fp, "password", c->password, 0);
+	credential_write_item(c, fp, "oauth_refresh_token", c->oauth_refresh_token, 0);
 	if (c->password_expiry_utc != TIME_MAX) {
 		char *s = xstrfmt("%"PRItime, c->password_expiry_utc);
-		credential_write_item(fp, "password_expiry_utc", s, 0);
+		credential_write_item(c, fp, "password_expiry_utc", s, 0);
 		free(s);
 	}
 	for (size_t i = 0; i < c->wwwauth_headers.nr; i++)
-		credential_write_item(fp, "wwwauth[]", c->wwwauth_headers.v[i], 0);
+		credential_write_item(c, fp, "wwwauth[]", c->wwwauth_headers.v[i], 0);
 	if (credential_has_capability(&c->capa_state, op_type)) {
 		if (c->multistage)
-			credential_write_item(fp, "continue", "1", 0);
+			credential_write_item(c, fp, "continue", "1", 0);
 		for (size_t i = 0; i < c->state_headers_to_send.nr; i++)
-			credential_write_item(fp, "state[]", c->state_headers_to_send.v[i], 0);
+			credential_write_item(c, fp, "state[]", c->state_headers_to_send.v[i], 0);
 	}
 }
 
diff --git a/credential.h b/credential.h
index 5f9e6ff2efef55..63fef3e2ea2fe7 100644
--- a/credential.h
+++ b/credential.h
@@ -168,7 +168,9 @@ struct credential {
 		 multistage: 1,
 		 quit:1,
 		 use_http_path:1,
-		 username_from_proto:1;
+		 username_from_proto:1,
+		 sanitize_prompt:1,
+		 protect_protocol:1;
 
 	struct credential_capability capa_authtype;
 	struct credential_capability capa_state;
@@ -195,6 +197,8 @@ struct credential {
 	.wwwauth_headers = STRVEC_INIT, \
 	.state_headers = STRVEC_INIT, \
 	.state_headers_to_send = STRVEC_INIT, \
+	.sanitize_prompt = 1, \
+	.protect_protocol = 1, \
 }
 
 /* Initialize a credential structure, setting all fields to empty. */
diff --git a/sideband.c b/sideband.c
index 02805573fab85d..9763dea05311ef 100644
--- a/sideband.c
+++ b/sideband.c
@@ -25,6 +25,12 @@ static struct keyword_entry keywords[] = {
 	{ "error",	GIT_COLOR_BOLD_RED },
 };
 
+static enum {
+	ALLOW_NO_CONTROL_CHARACTERS = 0,
+	ALLOW_ALL_CONTROL_CHARACTERS = 1,
+	ALLOW_ANSI_COLOR_SEQUENCES = 2
+} allow_control_characters = ALLOW_ANSI_COLOR_SEQUENCES;
+
 /* Returns a color setting (GIT_COLOR_NEVER, etc). */
 static int use_sideband_colors(void)
 {
@@ -38,6 +44,25 @@ static int use_sideband_colors(void)
 	if (use_sideband_colors_cached >= 0)
 		return use_sideband_colors_cached;
 
+	switch (git_config_get_maybe_bool("sideband.allowcontrolcharacters", &i)) {
+	case 0: /* Boolean value */
+		allow_control_characters = i ? ALLOW_ALL_CONTROL_CHARACTERS :
+			ALLOW_NO_CONTROL_CHARACTERS;
+		break;
+	case -1: /* non-Boolean value */
+		if (git_config_get_string_tmp("sideband.allowcontrolcharacters",
+					      &value))
+			; /* huh? `get_maybe_bool()` returned -1 */
+		else if (!strcmp(value, "color"))
+			allow_control_characters = ALLOW_ANSI_COLOR_SEQUENCES;
+		else
+			warning(_("unrecognized value for `sideband."
+				  "allowControlCharacters`: '%s'"), value);
+		break;
+	default:
+		break; /* not configured */
+	}
+
 	if (!git_config_get_string_tmp(key, &value))
 		use_sideband_colors_cached = git_config_colorbool(key, value);
 	else if (!git_config_get_string_tmp("color.ui", &value))
@@ -65,6 +90,55 @@ void list_config_color_sideband_slots(struct string_list *list, const char *pref
 		list_config_item(list, prefix, keywords[i].keyword);
 }
 
+static int handle_ansi_color_sequence(struct strbuf *dest, const char *src, int n)
+{
+	int i;
+
+	/*
+	 * Valid ANSI color sequences are of the form
+	 *
+	 * ESC [ [<n> [; <n>]*] m
+	 */
+
+	if (allow_control_characters != ALLOW_ANSI_COLOR_SEQUENCES ||
+	    n < 3 || src[0] != '\x1b' || src[1] != '[')
+		return 0;
+
+	for (i = 2; i < n; i++) {
+		if (src[i] == 'm') {
+			strbuf_add(dest, src, i + 1);
+			return i;
+		}
+		if (!isdigit(src[i]) && src[i] != ';')
+			break;
+	}
+
+	return 0;
+}
+
+static void strbuf_add_sanitized(struct strbuf *dest, const char *src, int n)
+{
+	int i;
+
+	if (allow_control_characters == ALLOW_ALL_CONTROL_CHARACTERS) {
+		strbuf_add(dest, src, n);
+		return;
+	}
+
+	strbuf_grow(dest, n);
+	for (; n && *src; src++, n--) {
+		if (!iscntrl(*src) || *src == '\t' || *src == '\n')
+			strbuf_addch(dest, *src);
+		else if ((i = handle_ansi_color_sequence(dest, src, n))) {
+			src += i;
+			n -= i;
+		} else {
+			strbuf_addch(dest, '^');
+			strbuf_addch(dest, 0x40 + *src);
+		}
+	}
+}
+
 /*
  * Optionally highlight one keyword in remote output if it appears at the start
  * of the line. This should be called for a single line only, which is
@@ -80,7 +154,7 @@ static void maybe_colorize_sideband(struct strbuf *dest, const char *src, int n)
 	int i;
 
 	if (!want_color_stderr(use_sideband_colors())) {
-		strbuf_add(dest, src, n);
+		strbuf_add_sanitized(dest, src, n);
 		return;
 	}
 
@@ -113,7 +187,7 @@ static void maybe_colorize_sideband(struct strbuf *dest, const char *src, int n)
 		}
 	}
 
-	strbuf_add(dest, src, n);
+	strbuf_add_sanitized(dest, src, n);
 }
 
 
diff --git a/strbuf.c b/strbuf.c
index 9b427403c46c2b..1d68bc6569ba19 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -495,7 +495,9 @@ void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags)
 		unsigned char ch = src[i];
 		if (ch <= 0x1F || ch >= 0x7F ||
 		    (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) ||
-		    strchr(URL_UNSAFE_CHARS, ch))
+		    ((flags & STRBUF_ENCODE_HOST_AND_PORT) ?
+		     !isalnum(ch) && !strchr("-.:[]", ch) :
+		     !!strchr(URL_UNSAFE_CHARS, ch)))
 			strbuf_addf(dst, "%%%02X", (unsigned char)ch);
 		else
 			strbuf_addch(dst, ch);
diff --git a/strbuf.h b/strbuf.h
index 003f880ff7d61c..26d3db1db6fccb 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -356,6 +356,7 @@ void strbuf_expand_bad_format(const char *format, const char *command);
 void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src);
 
 #define STRBUF_ENCODE_SLASH 1
+#define STRBUF_ENCODE_HOST_AND_PORT 2
 
 /**
  * Append the contents of a string to a strbuf, percent-encoding any characters
diff --git a/t/t0300-credentials.sh b/t/t0300-credentials.sh
index 14b1d2f4937e81..1cf19666b7ccec 100755
--- a/t/t0300-credentials.sh
+++ b/t/t0300-credentials.sh
@@ -77,6 +77,10 @@ test_expect_success 'setup helper scripts' '
 	test -z "$pexpiry" || echo password_expiry_utc=$pexpiry
 	EOF
 
+	write_script git-credential-cntrl-in-username <<-\EOF &&
+	printf "username=\\007latrix Lestrange\\n"
+	EOF
+
 	PATH="$PWD$PATH_SEP$PATH"
 '
 
@@ -697,6 +701,19 @@ test_expect_success 'match percent-encoded values in username' '
 	EOF
 '
 
+test_expect_success 'match percent-encoded values in hostname' '
+	test_config "credential.https://a%20b%20c/.helper" "$HELPER" &&
+	check fill <<-\EOF
+	url=https://a b c/
+	--
+	protocol=https
+	host=a b c
+	username=foo
+	password=bar
+	--
+	EOF
+'
+
 test_expect_success 'fetch with multiple path components' '
 	test_unconfig credential.helper &&
 	test_config credential.https://example.com/foo/repo.git.helper "verbatim foo bar" &&
@@ -886,6 +903,22 @@ test_expect_success 'url parser rejects embedded newlines' '
 	test_cmp expect stderr
 '
 
+test_expect_success 'url parser rejects embedded carriage returns' '
+	test_config credential.helper "!true" &&
+	test_must_fail git credential fill 2>stderr <<-\EOF &&
+	url=https://example%0d.com/
+	EOF
+	cat >expect <<-\EOF &&
+	fatal: credential value for host contains carriage return
+	If this is intended, set `credential.protectProtocol=false`
+	EOF
+	test_cmp expect stderr &&
+	GIT_ASKPASS=true \
+	git -c credential.protectProtocol=false credential fill <<-\EOF
+	url=https://example%0d.com/
+	EOF
+'
+
 test_expect_success 'host-less URLs are parsed as empty host' '
 	check fill "verbatim foo bar" <<-\EOF
 	url=cert:///path/to/cert.pem
@@ -995,4 +1028,20 @@ test_expect_success 'credential config with partial URLs' '
 	test_grep "skipping credential lookup for key" stderr
 '
 
+BEL="$(printf '\007')"
+
+test_expect_success 'interactive prompt is sanitized' '
+	check fill cntrl-in-username <<-EOF
+	protocol=https
+	host=example.org
+	--
+	protocol=https
+	host=example.org
+	username=${BEL}latrix Lestrange
+	password=askpass-password
+	--
+	askpass: Password for ${SQ}https://%07latrix%20Lestrange@example.org${SQ}:
+	EOF
+'
+
 test_done
diff --git a/t/t5409-colorize-remote-messages.sh b/t/t5409-colorize-remote-messages.sh
index 516b22fd9637ea..98c575e2e7ff13 100755
--- a/t/t5409-colorize-remote-messages.sh
+++ b/t/t5409-colorize-remote-messages.sh
@@ -99,4 +99,34 @@ test_expect_success 'fallback to color.ui' '
 	grep "<BOLD;RED>error<RESET>: error" decoded
 '
 
+test_expect_success 'disallow (color) control sequences in sideband' '
+	write_script .git/color-me-surprised <<-\EOF &&
+	printf "error: Have you \\033[31mread\\033[m this?\\a\\n" >&2
+	exec "$@"
+	EOF
+	test_config_global uploadPack.packObjectshook ./color-me-surprised &&
+	test_commit need-at-least-one-commit &&
+
+	git clone --no-local . throw-away 2>stderr &&
+	test_decode_color <stderr >decoded &&
+	test_grep RED decoded &&
+	test_grep "\\^G" stderr &&
+	tr -dc "\\007" <stderr >actual &&
+	test_must_be_empty actual &&
+
+	rm -rf throw-away &&
+	git -c sideband.allowControlCharacters=false \
+		clone --no-local . throw-away 2>stderr &&
+	test_decode_color <stderr >decoded &&
+	test_grep ! RED decoded &&
+	test_grep "\\^G" stderr &&
+
+	rm -rf throw-away &&
+	git -c sideband.allowControlCharacters clone --no-local . throw-away 2>stderr &&
+	test_decode_color <stderr >decoded &&
+	test_grep RED decoded &&
+	tr -dc "\\007" <stderr >actual &&
+	test_file_not_empty actual
+'
+
 test_done
diff --git a/t/t5541-http-push-smart.sh b/t/t5541-http-push-smart.sh
index 3ad514bbd4e303..d65829cdf5533c 100755
--- a/t/t5541-http-push-smart.sh
+++ b/t/t5541-http-push-smart.sh
@@ -344,7 +344,7 @@ test_expect_success 'push over smart http with auth' '
 	git push "$HTTPD_URL"/auth/smart/test_repo.git &&
 	git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
 		log -1 --format=%s >actual &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	test_cmp expect actual
 '
 
@@ -356,7 +356,7 @@ test_expect_success 'push to auth-only-for-push repo' '
 	git push "$HTTPD_URL"/auth-push/smart/test_repo.git &&
 	git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
 		log -1 --format=%s >actual &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	test_cmp expect actual
 '
 
@@ -386,7 +386,7 @@ test_expect_success 'push into half-auth-complete requires password' '
 	git push "$HTTPD_URL/half-auth-complete/smart/half-auth.git" &&
 	git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/half-auth.git" \
 		log -1 --format=%s >actual &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	test_cmp expect actual
 '
 
diff --git a/t/t5550-http-fetch-dumb.sh b/t/t5550-http-fetch-dumb.sh
index 58189c9f7dc9bd..e2ce70e26ab158 100755
--- a/t/t5550-http-fetch-dumb.sh
+++ b/t/t5550-http-fetch-dumb.sh
@@ -112,13 +112,13 @@ test_expect_success 'http auth can use user/pass in URL' '
 test_expect_success 'http auth can use just user in URL' '
 	set_askpass wrong pass@host &&
 	git clone "$HTTPD_URL_USER/auth/dumb/repo.git" clone-auth-pass &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'http auth can request both user and pass' '
 	set_askpass user@host pass@host &&
 	git clone "$HTTPD_URL/auth/dumb/repo.git" clone-auth-both &&
-	expect_askpass both user@host
+	expect_askpass both user%40host
 '
 
 test_expect_success 'http auth respects credential helper config' '
@@ -136,14 +136,14 @@ test_expect_success 'http auth can get username from config' '
 	test_config_global "credential.$HTTPD_URL.username" user@host &&
 	set_askpass wrong pass@host &&
 	git clone "$HTTPD_URL/auth/dumb/repo.git" clone-auth-user &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'configured username does not override URL' '
 	test_config_global "credential.$HTTPD_URL.username" wrong &&
 	set_askpass wrong pass@host &&
 	git clone "$HTTPD_URL_USER/auth/dumb/repo.git" clone-auth-user2 &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'set up repo with http submodules' '
@@ -164,7 +164,7 @@ test_expect_success 'cmdline credential config passes to submodule via clone' '
 	set_askpass wrong pass@host &&
 	git -c "credential.$HTTPD_URL.username=user@host" \
 		clone --recursive super super-clone &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'cmdline credential config passes submodule via fetch' '
@@ -175,7 +175,7 @@ test_expect_success 'cmdline credential config passes submodule via fetch' '
 	git -C super-clone \
 	    -c "credential.$HTTPD_URL.username=user@host" \
 	    fetch --recurse-submodules &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'cmdline credential config passes submodule update' '
@@ -192,7 +192,7 @@ test_expect_success 'cmdline credential config passes submodule update' '
 	git -C super-clone \
 	    -c "credential.$HTTPD_URL.username=user@host" \
 	    submodule update &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'fetch changes via http' '
diff --git a/t/t5551-http-fetch-smart.sh b/t/t5551-http-fetch-smart.sh
index 03662b9ade8fab..d282d32b761251 100755
--- a/t/t5551-http-fetch-smart.sh
+++ b/t/t5551-http-fetch-smart.sh
@@ -182,7 +182,7 @@ test_expect_success 'clone from password-protected repository' '
 	echo two >expect &&
 	set_askpass user@host pass@host &&
 	git clone --bare "$HTTPD_URL/auth/smart/repo.git" smart-auth &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	git --git-dir=smart-auth log -1 --format=%s >actual &&
 	test_cmp expect actual
 '
@@ -222,7 +222,7 @@ test_expect_success 'clone from auth-only-for-objects repository' '
 	echo two >expect &&
 	set_askpass user@host pass@host &&
 	git clone --bare "$HTTPD_URL/auth-fetch/smart/repo.git" half-auth &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	git --git-dir=half-auth log -1 --format=%s >actual &&
 	test_cmp expect actual
 '
@@ -247,14 +247,14 @@ test_expect_success 'redirects send auth to new location' '
 	set_askpass user@host pass@host &&
 	git -c credential.useHttpPath=true \
 	  clone $HTTPD_URL/smart-redir-auth/repo.git repo-redir-auth &&
-	expect_askpass both user@host auth/smart/repo.git
+	expect_askpass both user%40host auth/smart/repo.git
 '
 
 test_expect_success 'GIT_TRACE_CURL redacts auth details' '
 	rm -rf redact-auth trace &&
 	set_askpass user@host pass@host &&
 	GIT_TRACE_CURL="$(pwd)/trace" git clone --bare "$HTTPD_URL/auth/smart/repo.git" redact-auth &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 
 	# Ensure that there is no "Basic" followed by a base64 string, but that
 	# the auth details are redacted
@@ -266,7 +266,7 @@ test_expect_success 'GIT_CURL_VERBOSE redacts auth details' '
 	rm -rf redact-auth trace &&
 	set_askpass user@host pass@host &&
 	GIT_CURL_VERBOSE=1 git clone --bare "$HTTPD_URL/auth/smart/repo.git" redact-auth 2>trace &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 
 	# Ensure that there is no "Basic" followed by a base64 string, but that
 	# the auth details are redacted
@@ -279,7 +279,7 @@ test_expect_success 'GIT_TRACE_CURL does not redact auth details if GIT_TRACE_RE
 	set_askpass user@host pass@host &&
 	GIT_TRACE_REDACT=0 GIT_TRACE_CURL="$(pwd)/trace" \
 		git clone --bare "$HTTPD_URL/auth/smart/repo.git" redact-auth &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 
 	grep -i "Authorization: Basic [0-9a-zA-Z+/]" trace
 '
@@ -601,7 +601,7 @@ test_expect_success 'http auth remembers successful credentials' '
 	# the first request prompts the user...
 	set_askpass user@host pass@host &&
 	git ls-remote "$HTTPD_URL/auth/smart/repo.git" >/dev/null &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 
 	# ...and the second one uses the stored value rather than
 	# prompting the user.
@@ -632,7 +632,7 @@ test_expect_success 'http auth forgets bogus credentials' '
 	# us to prompt the user again.
 	set_askpass user@host pass@host &&
 	git ls-remote "$HTTPD_URL/auth/smart/repo.git" >/dev/null &&
-	expect_askpass both user@host
+	expect_askpass both user%40host
 '
 
 test_expect_success 'client falls back from v2 to v0 to match server' '
diff --git a/t/t7300-clean.sh b/t/t7300-clean.sh
index 63e32961709e54..f7d1b193b8da68 100755
--- a/t/t7300-clean.sh
+++ b/t/t7300-clean.sh
@@ -747,7 +747,7 @@ test_expect_success MINGW 'handle clean & core.longpaths = false nicely' '
 	test_must_fail git clean -xdf 2>.git/err &&
 	# grepping for a strerror string is unportable but it is OK here with
 	# MINGW prereq
-	test_grep "too long" .git/err
+	test_grep -e "too long" -e "No such file or directory" .git/err
 '
 
 test_expect_success 'clean untracked paths by pathspec' '
diff --git a/unix-socket.c b/unix-socket.c
index 79800d80636fc5..eb45bfa56e4852 100644
--- a/unix-socket.c
+++ b/unix-socket.c
@@ -80,7 +80,7 @@ int unix_stream_connect(const char *path, int disallow_chdir)
 	struct unix_sockaddr_context ctx;
 
 	if (unix_sockaddr_init(&sa, path, &ctx, disallow_chdir) < 0)
-		return -1;
+		goto fail;
 	fd = socket(AF_UNIX, SOCK_STREAM, 0);
 	if (fd < 0)
 		goto fail;