$ git clone -n https://src.fedoraproject.org/rpms/unlambda.git /var/lib/mock/f31-build-60145-28700/root/chroot_tmpdir/scmroot/unlambda
Cloning into '/var/lib/mock/f31-build-60145-28700/root/chroot_tmpdir/scmroot/unlambda'...
$ git reset --hard d4e16514c9507d7698f87fd39d608281705e918d
HEAD is now at d4e1651 refresh to cabal-rpm-0.13