$ git clone -n https://src.fedoraproject.org/rpms/happy.git /var/lib/mock/f40-build-742983-111007/root/chroot_tmpdir/scmroot/happy
Cloning into '/var/lib/mock/f40-build-742983-111007/root/chroot_tmpdir/scmroot/happy'...
$ git fetch origin 73013c4de32ca5de48be22a0f6f7f65285fbaa32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/happy
 * [new ref]         73013c4de32ca5de48be22a0f6f7f65285fbaa32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73013c4 https://hackage.haskell.org/package/happy-1.20.1.1/changelog