$ git clone -n https://src.fedoraproject.org/rpms/plasma-workspace.git /var/lib/mock/f40-build-2700704-70293/root/chroot_tmpdir/scmroot/plasma-workspace
Cloning into '/var/lib/mock/f40-build-2700704-70293/root/chroot_tmpdir/scmroot/plasma-workspace'...
$ git fetch origin e34336c56f459fb79cf551b6552b06716bf35d6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-workspace
 * [new ref]         e34336c56f459fb79cf551b6552b06716bf35d6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e34336c Backport systray icon color bugfix