$ git clone -n https://src.fedoraproject.org/rpms/kdecoration.git /var/lib/mock/f40-build-2535410-61850/root/chroot_tmpdir/scmroot/kdecoration
Cloning into '/var/lib/mock/f40-build-2535410-61850/root/chroot_tmpdir/scmroot/kdecoration'...
$ git fetch origin 01e0be3b060de6066118f784b5e8bcf1ad98ca8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdecoration
 * [new ref]         01e0be3b060de6066118f784b5e8bcf1ad98ca8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01e0be3 6.0.2