$ git clone -n https://src.fedoraproject.org/rpms/plexus-resources.git /var/lib/mock/f40-build-2160848-50941/root/chroot_tmpdir/scmroot/plexus-resources
Cloning into '/var/lib/mock/f40-build-2160848-50941/root/chroot_tmpdir/scmroot/plexus-resources'...
$ git fetch origin 6e61e0ef71cf229da99da18b3fa46647a94c4b05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plexus-resources
 * [new ref]         6e61e0ef71cf229da99da18b3fa46647a94c4b05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e61e0e Update javapackages test plan to f40