$ git clone -n https://src.fedoraproject.org/rpms/ghc-echo.git /var/lib/mock/f31-build-54288-27985/root/chroot_tmpdir/scmroot/ghc-echo
Cloning into '/var/lib/mock/f31-build-54288-27985/root/chroot_tmpdir/scmroot/ghc-echo'...
$ git reset --hard 7b15a54073f7cd48327c5967d49457414bd79c07
HEAD is now at 7b15a54 refresh to cabal-rpm-0.13