$ git clone -n https://src.fedoraproject.org/rpms/dtklog.git /var/lib/mock/f41-build-837674-159310/root/chroot_tmpdir/scmroot/dtklog
Cloning into '/var/lib/mock/f41-build-837674-159310/root/chroot_tmpdir/scmroot/dtklog'...
$ git fetch origin b76f3f21bf144d03a3f2a2a42a478579eaf4bbd9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtklog
 * [new ref]         b76f3f21bf144d03a3f2a2a42a478579eaf4bbd9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b76f3f2 initial import; rhbz#2303696