$ git clone -n https://src.fedoraproject.org/rpms/ghc-hxt.git /var/lib/mock/f31-build-54476-28008/root/chroot_tmpdir/scmroot/ghc-hxt
Cloning into '/var/lib/mock/f31-build-54476-28008/root/chroot_tmpdir/scmroot/ghc-hxt'...
$ git reset --hard c15122bd22afbf0986a0faac1af8d893f9320535
HEAD is now at c15122b refresh to cabal-rpm-0.13