$ git clone -n https://src.fedoraproject.org/rpms/ghc-gtk.git /var/lib/mock/f33-build-160862-43420/root/chroot_tmpdir/scmroot/ghc-gtk
Cloning into '/var/lib/mock/f33-build-160862-43420/root/chroot_tmpdir/scmroot/ghc-gtk'...
$ git reset --hard de779a11b24ade34cb9e07264ed95ed97132b5b3
HEAD is now at de779a1 update to 0.15.4