$ git clone -n https://src.fedoraproject.org/rpms/arapuca.git /var/lib/mock/f45-build-39748-751/root/chroot_tmpdir/scmroot/arapuca
Cloning into '/var/lib/mock/f45-build-39748-751/root/chroot_tmpdir/scmroot/arapuca'...
$ git fetch origin a0af264e244f27fffd5501a090f38fef3c459cba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arapuca
 * [new ref]         a0af264e244f27fffd5501a090f38fef3c459cba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0af264 Update to 0.2.7