$ git clone -n https://src.fedoraproject.org/rpms/ghc-async.git /var/lib/mock/f41-build-837912-159471/root/chroot_tmpdir/scmroot/ghc-async
Cloning into '/var/lib/mock/f41-build-837912-159471/root/chroot_tmpdir/scmroot/ghc-async'...
$ git reset --hard e4da7c6e1b4740c0526ebe9fbaae6fee63ece41e
HEAD is now at e4da7c6 https://hackage.haskell.org/package/async-2.2.5/changelog