$ git clone -n https://src.fedoraproject.org/rpms/gnome-do.git /var/lib/mock/f41-build-side-1-2951949-35499/root/chroot_tmpdir/scmroot/gnome-do
Cloning into '/var/lib/mock/f41-build-side-1-2951949-35499/root/chroot_tmpdir/scmroot/gnome-do'...
$ git fetch origin 73d137844ad857c47ae5ee8447c85e37f9cb4bff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-do
 * [new ref]         73d137844ad857c47ae5ee8447c85e37f9cb4bff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73d1378 convert GPLv3+ license to SPDX