$ git clone -n https://src.fedoraproject.org/rpms/abrt.git /var/lib/mock/f40-build-2403279-60556/root/chroot_tmpdir/scmroot/abrt
Cloning into '/var/lib/mock/f40-build-2403279-60556/root/chroot_tmpdir/scmroot/abrt'...
$ git fetch origin e8f18508dab09e7c91bc988e89e08a63ea6eb4da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/abrt
 * [new ref]         e8f18508dab09e7c91bc988e89e08a63ea6eb4da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8f1850 Update to upstream release 2.17.4