According to Isabelle/597059a44d6f it is better to use Mercurial 2.8.2 to imitate https://admin.phacility.com (see also https://discourse.phabricator-community.org/t/prefer-old-mercurial-2-8-2-to-avoid-various-problems/3431).
On the other hand, a global /usr/local/bin/hg that is rather old also causes problems, e.g. excessive CPU usage with hgwebdir behind https://isabelle.sketis.net/repos (due to web crawlers exploring the site).
There are various possibilities and workarounds, e.g. different local Mercurial installations for different purposes. Eventually, it is better to get Phabricator updated according to https://discourse.phabricator-community.org/t/error-cloning-mercurial-repository-http-after-first-install/1200
diff --git a/src/applications/diffusion/protocol/DiffusionMercurialWireProtocol.php b/src/applications/diffusion/protocol/DiffusionMercurialWireProtocol.php index 251935a6d..b90c40842 100644 --- a/src/applications/diffusion/protocol/DiffusionMercurialWireProtocol.php +++ b/src/applications/diffusion/protocol/DiffusionMercurialWireProtocol.php @@ -126,6 +126,7 @@ final class DiffusionMercurialWireProtocol extends Phobject { break; } } + array_push($parts, 'httpheader=1024'); return implode(' ', $parts); }