$ git clone -n https://src.fedoraproject.org/rpms/plasma-systemmonitor.git /var/lib/mock/f40-build-2372377-60406/root/chroot_tmpdir/scmroot/plasma-systemmonitor
Cloning into '/var/lib/mock/f40-build-2372377-60406/root/chroot_tmpdir/scmroot/plasma-systemmonitor'...
$ git fetch origin 18274dea7ab7123cdfd4befc0562453d4c9c235a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-systemmonitor
 * [new ref]         18274dea7ab7123cdfd4befc0562453d4c9c235a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18274de 5.93.0