cloning-haskell-repo.sh

> git clone https://git.haskell.org/ghc.git
Cloning into 'ghc'...
remote: Counting objects: 429508, done.
remote: Compressing objects: 100% (89887/89887), done.
Receiving objects:  20% (85902/429508), 15.03 MiB | 2.85 MiB/s  Receiving objects:  21% (90197/429508), 17.63 MiB | 3.24 MiB/s  Receiving objects:  22% (94492/429508), 17.63 MiB | 3.24 MiB/s  Receiving objects:  22% (96993/429508), 20.26 MiB | 3.63 MiB/s  Receiving objects:  23% (98787/429508), 20.26 MiB | 3.63 MiB/s  Receiving objects:  24% (103082/429508), 23.11 MiB | 4.03 MiB/s Receiving objects:  24% (105088/remote: Total 429508 (delta 323225), reused 426618 (delta 320966)
Receiving objects: 100% (429508/429508), 98.99 MiB | 8.95 MiB/s, done.
Resolving deltas: 100% (323225/323225), done.
Checking out files: 100% (12695/12695), done.
> cd ghc
> git submodule -q update --init --recursive
error: object cc2f67f98fbc246f010516c71722d5c3432e0a2b: missingNameBeforeEmail: invalid author/committer line - missing space before email
fatal: Error in object
fatal: index-pack failed
fatal: clone of 'https://git.haskell.org/packages/Cabal.git' into submodule path '/Users/jabley/Projects/haskell/ghc/libraries/Cabal' failed
Failed to clone 'libraries/Cabal'. Retry scheduled
error: object 8c0b3e7a90d311f51e9cbdabc82367b6fa21df9a: missingNameBeforeEmail: invalid author/committer line - missing space before email
fatal: Error in object
fatal: index-pack failed
fatal: clone of 'https://git.haskell.org/packages/bytestring.git' into submodule path '/Users/jabley/Projects/haskell/ghc/libraries/bytestring' failed
Failed to clone 'libraries/bytestring'. Retry scheduled
error: object 2b07607c4562034359f52b42055f8d2af4721ca4: missingNameBeforeEmail: invalid author/committer line - missing space before email
fatal: Error in object
fatal: index-pack failed
fatal: clone of 'https://git.haskell.org/haddock.git' into submodule path '/Users/jabley/Projects/haskell/ghc/utils/haddock' failed
Failed to clone 'utils/haddock'. Retry scheduled
error: object cc2f67f98fbc246f010516c71722d5c3432e0a2b: missingNameBeforeEmail: invalid author/committer line - missing space before email
fatal: Error in object
fatal: index-pack failed
fatal: clone of 'https://git.haskell.org/packages/Cabal.git' into submodule path '/Users/jabley/Projects/haskell/ghc/libraries/Cabal' failed
Failed to clone 'libraries/Cabal' a second time, aborting

PEBKAC – fetch.fsckObjects = true and transfer.fsckObjects = true in ~/.gitconfig was causing the problem.