$ git clone -n https://src.fedoraproject.org/rpms/ghc-concurrent-output.git /var/lib/mock/f40-build-742869-110925/root/chroot_tmpdir/scmroot/ghc-concurrent-output
Cloning into '/var/lib/mock/f40-build-742869-110925/root/chroot_tmpdir/scmroot/ghc-concurrent-output'...
$ git reset --hard 522763c5b8c4d250302d36c76739ea3e27a0e560
HEAD is now at 522763c https://hackage.haskell.org/package/concurrent-output-1.10.18/changelog