$ git clone -n https://src.fedoraproject.org/rpms/tcmu-runner.git /var/lib/mock/f39-build-1566687-37590/root/chroot_tmpdir/scmroot/tcmu-runner
Cloning into '/var/lib/mock/f39-build-1566687-37590/root/chroot_tmpdir/scmroot/tcmu-runner'...
$ git fetch origin 535a05eaec086ea17d207a90f7823f797b370838:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcmu-runner
 * [new ref]         535a05eaec086ea17d207a90f7823f797b370838 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 535a05e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild