$ git clone -n https://src.fedoraproject.org/rpms/dtklog.git /var/lib/mock/f41-build-847247-163867/root/chroot_tmpdir/scmroot/dtklog
Cloning into '/var/lib/mock/f41-build-847247-163867/root/chroot_tmpdir/scmroot/dtklog'...
$ git fetch origin d9576918f89bc545357e72248ce89f44e8deec0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtklog
 * [new ref]         d9576918f89bc545357e72248ce89f44e8deec0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d957691 Rebuild (qt5)