$ git clone -n https://src.fedoraproject.org/rpms/radiotray-ng.git /var/lib/mock/f40-build-2269760-54778/root/chroot_tmpdir/scmroot/radiotray-ng
Cloning into '/var/lib/mock/f40-build-2269760-54778/root/chroot_tmpdir/scmroot/radiotray-ng'...
$ git fetch origin 5faf69e0fa0b6a771d6fdeaef4d306a7a937e3d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/radiotray-ng
 * [new ref]         5faf69e0fa0b6a771d6fdeaef4d306a7a937e3d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5faf69e Rebuilt for Boost 1.83