$ git clone -n https://src.fedoraproject.org/rpms/ghc-cereal.git /var/lib/mock/f31-build-99588-33178/root/chroot_tmpdir/scmroot/ghc-cereal
Cloning into '/var/lib/mock/f31-build-99588-33178/root/chroot_tmpdir/scmroot/ghc-cereal'...
$ git reset --hard ca2a9d6ea97e7fd22961922443392149371664a3
HEAD is now at ca2a9d6 BR prof for lib and static for executable