$ git clone -n https://src.fedoraproject.org/rpms/plasma-mobile.git /var/lib/mock/f41-build-1012455-17766/root/chroot_tmpdir/scmroot/plasma-mobile
Cloning into '/var/lib/mock/f41-build-1012455-17766/root/chroot_tmpdir/scmroot/plasma-mobile'...
$ git fetch origin 07ba1929725445f0d91cfd2fff001fc790086a83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-mobile
 * [new ref]         07ba1929725445f0d91cfd2fff001fc790086a83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07ba192 6.1.0