$ git clone -n https://src.fedoraproject.org/rpms/ghc-X11.git /var/lib/mock/f33-build-185189-45726/root/chroot_tmpdir/scmroot/ghc-X11
Cloning into '/var/lib/mock/f33-build-185189-45726/root/chroot_tmpdir/scmroot/ghc-X11'...
$ git reset --hard c6d2a66c1e5774c4ad6abc066059463e1923c4c4
HEAD is now at c6d2a66 update to 1.9.1