$ git clone -n https://src.fedoraproject.org/rpms/kf6.git /var/lib/mock/f41-build-side-114591-60925816-6585978/root/chroot_tmpdir/scmroot/kf6
Cloning into '/var/lib/mock/f41-build-side-114591-60925816-6585978/root/chroot_tmpdir/scmroot/kf6'...
$ git fetch origin 71d71578d44a67fe602b533ed5d6a8b0fa3b242e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6
 * [new ref]         71d71578d44a67fe602b533ed5d6a8b0fa3b242e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71d7157 6.16.0