$ git clone -n https://src.fedoraproject.org/rpms/plasma-workspace-x11.git /var/lib/mock/f42-bootstrap-3533985-46428/root/chroot_tmpdir/scmroot/plasma-workspace-x11
Cloning into '/var/lib/mock/f42-bootstrap-3533985-46428/root/chroot_tmpdir/scmroot/plasma-workspace-x11'...
$ git fetch origin aa69a06d74ee5d5c16ad91fff49072f71fea8d7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-workspace-x11
 * [new ref]         aa69a06d74ee5d5c16ad91fff49072f71fea8d7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa69a06 Update to 6.3.5.