diff --git a/Documentation/git-credential.txt b/Documentation/git-credential.txt
index 791a57dddfb..9069bfb2d50 100644
--- a/Documentation/git-credential.txt
+++ b/Documentation/git-credential.txt
@@ -175,6 +175,18 @@ username in the example above) will be left unset.
 	attribute 'wwwauth[]', where the order of the attributes is the same as
 	they appear in the HTTP response.
 
+`authtype`::
+
+	Indicates the type of authentication scheme that should be used by Git.
+	Credential helpers may reply to a request from Git with this attribute,
+	such that subsequent authenticated requests include the correct
+	`Authorization` header.
+	If this attribute is not present, the default value is "Basic".
+	Known values include "Basic", "Digest", and "Bearer".
+	If an unknown value is provided, this is taken as the authentication
+	scheme for the `Authorization` header, and the `password` field is
+	used as the raw unencoded authorization parameters of the same header.
+
 GIT
 ---
 Part of the linkgit:git[1] suite
diff --git a/credential.c b/credential.c
index 8a3ad6c0ae2..a556f9f375a 100644
--- a/credential.c
+++ b/credential.c
@@ -21,6 +21,7 @@ void credential_clear(struct credential *c)
 	free(c->path);
 	free(c->username);
 	free(c->password);
+	free(c->authtype);
 	string_list_clear(&c->helpers, 0);
 	strvec_clear(&c->wwwauth_headers);
 
@@ -235,6 +236,9 @@ int credential_read(struct credential *c, FILE *fp)
 		} else if (!strcmp(key, "path")) {
 			free(c->path);
 			c->path = xstrdup(value);
+		} else if (!strcmp(key, "authtype")) {
+			free(c->authtype);
+			c->authtype = xstrdup(value);
 		} else if (!strcmp(key, "url")) {
 			credential_from_url(c, value);
 		} else if (!strcmp(key, "quit")) {
@@ -281,6 +285,7 @@ void credential_write(const struct credential *c, FILE *fp)
 	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, "authtype", c->authtype, 0);
 	credential_write_strvec(fp, "wwwauth", &c->wwwauth_headers);
 }
 
diff --git a/credential.h b/credential.h
index 6f2e5bc610b..8d580b054d0 100644
--- a/credential.h
+++ b/credential.h
@@ -140,6 +140,7 @@ struct credential {
 	char *protocol;
 	char *host;
 	char *path;
+	char *authtype;
 };
 
 #define CREDENTIAL_INIT { \
diff --git a/git-curl-compat.h b/git-curl-compat.h
index 56a83b6bbd8..839049f6dfe 100644
--- a/git-curl-compat.h
+++ b/git-curl-compat.h
@@ -126,4 +126,14 @@
 #define GIT_CURL_HAVE_CURLSSLSET_NO_BACKENDS
 #endif
 
+/**
+ * CURLAUTH_BEARER was added in 7.61.0, released in July 2018.
+ * However, only 7.69.0 fixes a bug where Bearer headers were not
+ * actually sent with reused connections on subsequent transfers
+ * (curl/curl@dea17b519dc1).
+ */
+#if LIBCURL_VERSION_NUM >= 0x074500
+#define GIT_CURL_HAVE_CURLAUTH_BEARER
+#endif
+
 #endif
diff --git a/http.c b/http.c
index 17b47195d22..ac620bcbf0c 100644
--- a/http.c
+++ b/http.c
@@ -517,7 +517,8 @@ static int curl_empty_auth_enabled(void)
 
 static void init_curl_http_auth(struct active_request_slot *slot)
 {
-	if (!http_auth.username || !*http_auth.username) {
+	if (!http_auth.authtype &&
+		(!http_auth.username || !*http_auth.username)) {
 		if (curl_empty_auth_enabled())
 			curl_easy_setopt(slot->curl, CURLOPT_USERPWD, ":");
 		return;
@@ -525,8 +526,25 @@ static void init_curl_http_auth(struct active_request_slot *slot)
 
 	credential_fill(&http_auth);
 
-	curl_easy_setopt(slot->curl, CURLOPT_USERNAME, http_auth.username);
-	curl_easy_setopt(slot->curl, CURLOPT_PASSWORD, http_auth.password);
+	if (!http_auth.authtype || !strcasecmp(http_auth.authtype, "basic")
+				|| !strcasecmp(http_auth.authtype, "digest")) {
+		curl_easy_setopt(slot->curl, CURLOPT_USERNAME,
+			http_auth.username);
+		curl_easy_setopt(slot->curl, CURLOPT_PASSWORD,
+			http_auth.password);
+#ifdef GIT_CURL_HAVE_CURLAUTH_BEARER
+	} else if (!strcasecmp(http_auth.authtype, "bearer")) {
+		curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, CURLAUTH_BEARER);
+		curl_easy_setopt(slot->curl, CURLOPT_XOAUTH2_BEARER,
+			http_auth.password);
+#endif
+	} else {
+		struct strbuf auth = STRBUF_INIT;
+		strbuf_addf(&auth, "Authorization: %s %s",
+			http_auth.authtype, http_auth.password);
+		slot->headers = curl_slist_append(slot->headers, auth.buf);
+		strbuf_release(&auth);
+	}
 }
 
 /* *var must be free-able */
