$ git clone -n https://src.fedoraproject.org/rpms/polkit-kde.git /var/lib/mock/f40-build-832532-14883/root/chroot_tmpdir/scmroot/polkit-kde
Cloning into '/var/lib/mock/f40-build-832532-14883/root/chroot_tmpdir/scmroot/polkit-kde'...
$ git fetch origin 44de14062bd878905b6a7fd2b11aca507eae8f09:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/polkit-kde
 * [new ref]         44de14062bd878905b6a7fd2b11aca507eae8f09 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44de140 fix: really modify spec files for 6.0.5