$ git clone -n https://src.fedoraproject.org/rpms/ghc-MemoTrie.git /var/lib/mock/f40-build-741931-110424/root/chroot_tmpdir/scmroot/ghc-MemoTrie
Cloning into '/var/lib/mock/f40-build-741931-110424/root/chroot_tmpdir/scmroot/ghc-MemoTrie'...
$ git reset --hard f780502a8749028b73ca7105e8d9bb4a08b0ded1
HEAD is now at f780502 revise newtype-generics