$ git clone -n https://src.fedoraproject.org/rpms/libplasma.git /var/lib/mock/f40-build-2264637-54569/root/chroot_tmpdir/scmroot/libplasma
Cloning into '/var/lib/mock/f40-build-2264637-54569/root/chroot_tmpdir/scmroot/libplasma'...
$ git fetch origin 4298f7cad4721abb140ff10c82b60aacf73e585c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libplasma
 * [new ref]         4298f7cad4721abb140ff10c82b60aacf73e585c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4298f7c 5.92.0