$ git clone -n https://src.fedoraproject.org/rpms/ghc-system-fileio.git /var/lib/mock/f40-build-742694-110881/root/chroot_tmpdir/scmroot/ghc-system-fileio
Cloning into '/var/lib/mock/f40-build-742694-110881/root/chroot_tmpdir/scmroot/ghc-system-fileio'...
$ git reset --hard cbb26954c594a117007d8ecdd2a3f76bb00dbca5
HEAD is now at cbb2695 bump release