$ git clone -n https://src.fedoraproject.org/rpms/maturin.git /var/lib/mock/f41-build-813937-148824/root/chroot_tmpdir/scmroot/maturin
Cloning into '/var/lib/mock/f41-build-813937-148824/root/chroot_tmpdir/scmroot/maturin'...
$ git fetch origin 5370c2773167124d2971feba90d0c89cb4d09df9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maturin
 * [new ref]         5370c2773167124d2971feba90d0c89cb4d09df9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5370c27 Update to version 1.6.0; Fixes RHBZ#2290642