$ git clone -n https://src.fedoraproject.org/rpms/ghc-transformers-base.git /var/lib/mock/f31-build-55017-28079/root/chroot_tmpdir/scmroot/ghc-transformers-base
Cloning into '/var/lib/mock/f31-build-55017-28079/root/chroot_tmpdir/scmroot/ghc-transformers-base'...
$ git reset --hard 1dcd00c61a17cf098f4071e887a357832c00ebfb
HEAD is now at 1dcd00c update to 0.4.5.2