pod update在Installing Realm (3.1.0)卡住

[simple-YoungBadBoy]

报错信息：

[!] Error installing Realm [!] /usr/local/bin/git -C /var/folders/_y/gfbrplk934313lprck24l6r00000gn/T/d20180929-38864-kqskm6 submodule update --init --recursive

Submodule path 'Realm/ObjectStore': checked out '8517ee7f4378fe0f54945b3e4973766ff65e455d' Submodule 'Realm/ObjectStore' (https://github.com/realm/realm-object-store.git) registered for path 'Realm/ObjectStore' Cloning into '/private/var/folders/_y/gfbrplk934313lprck24l6r00000gn/T/d20180929-38864-kqskm6/Realm/ObjectStore'... Submodule 'external/catch' (https://github.com/philsquared/Catch) registered for path 'Realm/ObjectStore/external/catch' Cloning into '/private/var/folders/_y/gfbrplk934313lprck24l6r00000gn/T/d20180929-38864-kqskm6/Realm/ObjectStore/external/catch'... error: RPC failed; curl 56 LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54 fatal: The remote end hung up unexpectedly fatal: early EOF fatal: index-pack failed fatal: clone of 'https://github.com/philsquared/Catch' into submodule path '/private/var/folders/_y/gfbrplk934313lprck24l6r00000gn/T/d20180929-38864-kqskm6/Realm/ObjectStore/external/catch' failed Failed to clone 'external/catch'. Retry scheduled Cloning into '/private/var/folders/_y/gfbrplk934313lprck24l6r00000gn/T/d20180929-38864-kqskm6/Realm/ObjectStore/external/catch'... error: RPC failed; curl 56 LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 60 fatal: The remote end hung up unexpectedly fatal: early EOF fatal: index-pack failed fatal: clone of 'https://github.com/philsquared/Catch' into submodule path '/private/var/folders/_y/gfbrplk934313lprck24l6r00000gn/T/d20180929-38864-kqskm6/Realm/ObjectStore/external/catch' failed Failed to clone 'external/catch' a second time, aborting Failed to recurse into submodule path 'Realm/ObjectStore'