$ git clone -n https://src.fedoraproject.org/rpms/openscap.git /var/lib/mock/f43-build-59044460-6570597/root/chroot_tmpdir/scmroot/openscap
Cloning into '/var/lib/mock/f43-build-59044460-6570597/root/chroot_tmpdir/scmroot/openscap'...
$ git fetch origin c4b683290313cafba9b22fd51bd2d5a8e23b2c2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openscap
 * [new ref]         c4b683290313cafba9b22fd51bd2d5a8e23b2c2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4b6832 openscap-1.4.2-2