$ git clone -n https://src.fedoraproject.org/rpms/opus.git /var/lib/mock/f40-build-2265633-54616/root/chroot_tmpdir/scmroot/opus
Cloning into '/var/lib/mock/f40-build-2265633-54616/root/chroot_tmpdir/scmroot/opus'...
$ git fetch origin a64b7ddd2dc325866972275c0c545f49b5c185bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opus
 * [new ref]         a64b7ddd2dc325866972275c0c545f49b5c185bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a64b7dd SPDX Migration