$ git clone -n https://src.fedoraproject.org/rpms/tachyon.git /var/lib/mock/f39-build-1964916-43285/root/chroot_tmpdir/scmroot/tachyon
Cloning into '/var/lib/mock/f39-build-1964916-43285/root/chroot_tmpdir/scmroot/tachyon'...
$ git fetch origin d04aa849a3489a38fae6f704d3eaee5a71277267:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tachyon
 * [new ref]         d04aa849a3489a38fae6f704d3eaee5a71277267 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d04aa84 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild