$ git clone -n https://src.fedoraproject.org/rpms/okular.git /var/lib/mock/f40-build-1415129-23563/root/chroot_tmpdir/scmroot/okular
Cloning into '/var/lib/mock/f40-build-1415129-23563/root/chroot_tmpdir/scmroot/okular'...
$ git fetch origin a9600cdf2167a120fcf7e35b77fdff3f6806f61e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/okular
 * [new ref]         a9600cdf2167a120fcf7e35b77fdff3f6806f61e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9600cd Merge branch 'rawhide' into f40