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Index: src/applications/diffusion/controller/DiffusionServeController.php
===================================================================
--- src/applications/diffusion/controller/DiffusionServeController.php
+++ src/applications/diffusion/controller/DiffusionServeController.php
@@ -329,6 +329,14 @@
->resolve();
if ($err) {
+ if ($this->isValidGitShallowCloneResponse($stdout, $stderr)) {
+ // Ignore the error if the response passes this special check for
+ // validity.
+ $err = 0;
+ }
+ }
+
+ if ($err) {
return new PhabricatorVCSResponse(
500,
pht('Error %d: %s', $err, $stderr));
@@ -512,5 +520,27 @@
return implode('', $out);
}
+ private function isValidGitShallowCloneResponse($stdout, $stderr) {
+ // If you execute `git clone --depth N ...`, git sends a request which
+ // `git-http-backend` responds to by emitting valid output and then exiting
+ // with a failure code and an error message. If we ignore this error,
+ // everything works.
+
+ // This is a pretty funky fix: it would be nice to more precisely detect
+ // that a request is a `--depth N` clone request, but we don't have any code
+ // to decode protocol frames yet. Instead, look for reasonable evidence
+ // in the error and output that we're looking at a `--depth` clone.
+
+ // For evidence this isn't completely crazy, see:
+ // https://github.com/schacon/grack/pull/7
+
+ $stdout_regexp = '(^Content-Type: application/x-git-upload-pack-result)m';
+ $stderr_regexp = '(The remote end hung up unexpectedly)';
+
+ $has_pack = preg_match($stdout_regexp, $stdout);
+ $is_hangup = preg_match($stderr_regexp, $stderr);
+
+ return $has_pack && $is_hangup;
+ }
}

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