$ git clone -n https://src.fedoraproject.org/rpms/ghc-reflection.git /var/lib/mock/f31-build-54781-28055/root/chroot_tmpdir/scmroot/ghc-reflection
Cloning into '/var/lib/mock/f31-build-54781-28055/root/chroot_tmpdir/scmroot/ghc-reflection'...
$ git reset --hard 914e71f84ec20d64a459dcbf94e29489ce0783c1
HEAD is now at 914e71f refresh to cabal-rpm-0.13