$ git clone -n https://src.fedoraproject.org/rpms/okular.git /var/lib/mock/f42-build-side-1-3511939-46060/root/chroot_tmpdir/scmroot/okular
Cloning into '/var/lib/mock/f42-build-side-1-3511939-46060/root/chroot_tmpdir/scmroot/okular'...
$ git fetch origin 67f30bb5d74420ab33b6a7dba70942381da37e38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/okular
 * [new ref]         67f30bb5d74420ab33b6a7dba70942381da37e38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67f30bb Rebuild (qt6)