$ git clone -n https://src.fedoraproject.org/rpms/libcec.git /var/lib/mock/f39-build-1550986-36960/root/chroot_tmpdir/scmroot/libcec
Cloning into '/var/lib/mock/f39-build-1550986-36960/root/chroot_tmpdir/scmroot/libcec'...
$ git fetch origin 20673a9b5bc3f3bed151ee34e1e8baa25fbcc514:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcec
 * [new ref]         20673a9b5bc3f3bed151ee34e1e8baa25fbcc514 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20673a9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild