$ git clone -n https://src.fedoraproject.org/rpms/sofia-sip.git /var/lib/mock/f40-build-2645492-66565/root/chroot_tmpdir/scmroot/sofia-sip
Cloning into '/var/lib/mock/f40-build-2645492-66565/root/chroot_tmpdir/scmroot/sofia-sip'...
$ git fetch origin 7631c48eb68c485069324815ccfb7995ad5e915a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sofia-sip
 * [new ref]         7631c48eb68c485069324815ccfb7995ad5e915a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7631c48 migrated to SPDX license