$ git clone -n https://src.fedoraproject.org/rpms/ghc-IOSpec.git /var/lib/mock/f31-build-53929-27924/root/chroot_tmpdir/scmroot/ghc-IOSpec
Cloning into '/var/lib/mock/f31-build-53929-27924/root/chroot_tmpdir/scmroot/ghc-IOSpec'...
$ git reset --hard 15f5ced1c6c6dbb06253e62674b4a421cdf6c5f8
HEAD is now at 15f5ced update to 0.3.1.1