$ git clone -n https://src.fedoraproject.org/rpms/moby-engine.git /var/lib/mock/f41-build-854110-166804/root/chroot_tmpdir/scmroot/moby-engine
Cloning into '/var/lib/mock/f41-build-854110-166804/root/chroot_tmpdir/scmroot/moby-engine'...
$ git fetch origin 3ff91c05da682a755ae19a847f48765d455fa521:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/moby-engine
 * [new ref]         3ff91c05da682a755ae19a847f48765d455fa521 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ff91c0 Update to v27.3.1