$ git clone -n https://src.fedoraproject.org/rpms/boinc-client.git /var/lib/mock/f41-build-side-1-2656019-28431/root/chroot_tmpdir/scmroot/boinc-client
Cloning into '/var/lib/mock/f41-build-side-1-2656019-28431/root/chroot_tmpdir/scmroot/boinc-client'...
$ git fetch origin ea09d0f4706b7bc43b072f3a458e3a3dcae4edea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/boinc-client
 * [new ref]         ea09d0f4706b7bc43b072f3a458e3a3dcae4edea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea09d0f convert license to SPDX