$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod.git /var/lib/mock/f33-build-151127-43278/root/chroot_tmpdir/scmroot/ghc-yesod
Cloning into '/var/lib/mock/f33-build-151127-43278/root/chroot_tmpdir/scmroot/ghc-yesod'...
$ git reset --hard aa439efc875f95ec72c090d95a6791bcdbee1b56
HEAD is now at aa439ef update to 1.6.0.1