$ git clone -n https://src.fedoraproject.org/rpms/okular.git /var/lib/mock/f42-build-side-1-3554950-46650/root/chroot_tmpdir/scmroot/okular
Cloning into '/var/lib/mock/f42-build-side-1-3554950-46650/root/chroot_tmpdir/scmroot/okular'...
$ git fetch origin 4cc49137652705c09154d0bca9f03864cfffb493:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/okular
 * [new ref]         4cc49137652705c09154d0bca9f03864cfffb493 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cc4913 25.04.2