$ git clone -n https://src.fedoraproject.org/rpms/libcec.git /var/lib/mock/f40-build-734314-105847/root/chroot_tmpdir/scmroot/libcec
Cloning into '/var/lib/mock/f40-build-734314-105847/root/chroot_tmpdir/scmroot/libcec'...
$ git fetch origin ef9e6d4972e0d8a9beb934a2ddf8e707bfe34507:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcec
 * [new ref]         ef9e6d4972e0d8a9beb934a2ddf8e707bfe34507 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef9e6d4 Fix RHBZ #2245791 + witch license tag to SPDX