$ git clone -n https://src.fedoraproject.org/rpms/brotli.git /var/lib/mock/f42-build-3165651-40919/root/chroot_tmpdir/scmroot/brotli
Cloning into '/var/lib/mock/f42-build-3165651-40919/root/chroot_tmpdir/scmroot/brotli'...
$ git fetch origin 507278c81b1c78ba88c2ad7c700c165aca6e26e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/brotli
 * [new ref]         507278c81b1c78ba88c2ad7c700c165aca6e26e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 507278c Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild