$ git clone -n https://src.fedoraproject.org/rpms/ghc-feed.git /var/lib/mock/f41-build-839830-160371/root/chroot_tmpdir/scmroot/ghc-feed
Cloning into '/var/lib/mock/f41-build-839830-160371/root/chroot_tmpdir/scmroot/ghc-feed'...
$ git reset --hard b9da9bc26db5453f1cff042ee9e55511e25381a7
HEAD is now at b9da9bc refresh .cabal revision