Swift 3.1.1まではtoolchainのビルドに成功したリポジトリの状態を保存するために

$ git submodule status +2a14f75cef483ab2537f4559d881356e7950236c clang (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +d875488a6a95d5487b7c675f79a8dafef210a65f cmark (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +c6b8e659bd4a561e65f3d206ef10ef5500a3c445 compiler-rt (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +3aabf3431abc2539f0667ff889d7c9e7eec06178 llbuild (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +fcc6492ef1356fe7d66b3589d932aa0575dc2aab lldb (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a-2-gfcc6492ef) +3e9b847792dc205825321269608dc3abee2494ea llvm (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +253e94c1fa511704baeb61cf69995bbf09ba435e ninja (v1.8.2) +4953262288908cbce5a369a5ca43c4ab870e0e53 swift (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a-15-g4953262288) +414ebffa9784b4bd94d821bcab2c03e9bfccf6c3 swift-corelibs-foundation (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +8b72f761a0df76c8d5be00c12bfff9fab182dce7 swift-corelibs-libdispatch (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +732d9533c70dca9ede2c745b64a11f8c7dc7f824 swift-corelibs-xctest (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +01eecd5a83279635823e78101a538132784bc628 swift-integration-tests (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +4a73bf895b6fd9e5f72aad441869ab597e9e3fc3 swift-xcode-playground-support (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a) +495454c155a68d8fa4a40bc423a345385411bac4 swiftpm (swift-DEVELOPMENT-SNAPSHOT-2018-01-17-a-1-g495454c1)

の様にgit-submodule(1)で管理してたのだけど、しばらくビルドしてない間にclangがサブモジュールになってるとllvmのビルドに失敗する様になってた。 (edited)