$ git clone -n https://src.fedoraproject.org/rpms/alt-ergo.git /var/lib/mock/f31-build-110141-34001/root/chroot_tmpdir/scmroot/alt-ergo
Cloning into '/var/lib/mock/f31-build-110141-34001/root/chroot_tmpdir/scmroot/alt-ergo'...
$ git reset --hard 23076e58d83d7afbd1be1ede01dd493184479d4f
HEAD is now at 23076e5 Rebuild for ocaml-zarith 1.9.