$ git clone -n https://src.fedoraproject.org/rpms/ghc-concurrent-output.git /var/lib/mock/f31-build-54169-27959/root/chroot_tmpdir/scmroot/ghc-concurrent-output
Cloning into '/var/lib/mock/f31-build-54169-27959/root/chroot_tmpdir/scmroot/ghc-concurrent-output'...
$ git reset --hard 1999ccde03a5b489d9f90334da679b737a5ba83e
HEAD is now at 1999ccd update to 1.10.9