$ git clone -n https://src.fedoraproject.org/rpms/plasma-breeze.git /var/lib/mock/f42-build-side-1-3588911-46951/root/chroot_tmpdir/scmroot/plasma-breeze
Cloning into '/var/lib/mock/f42-build-side-1-3588911-46951/root/chroot_tmpdir/scmroot/plasma-breeze'...
$ git fetch origin 1c36d209832220caad75cb9c909f62131318b4a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-breeze
 * [new ref]         1c36d209832220caad75cb9c909f62131318b4a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c36d20 6.4.2