$ git clone -n https://src.fedoraproject.org/rpms/okular.git /var/lib/mock/f45-build-20950-576/root/chroot_tmpdir/scmroot/okular
Cloning into '/var/lib/mock/f45-build-20950-576/root/chroot_tmpdir/scmroot/okular'...
$ git fetch origin 4f84c22567b10a9f88e5ee3561bc7d2a7c2bb64c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/okular
 * [new ref]         4f84c22567b10a9f88e5ee3561bc7d2a7c2bb64c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f84c22 26.08.1