$ git clone -n https://src.fedoraproject.org/rpms/nosync.git /var/lib/mock/f40-build-2299592-56642/root/chroot_tmpdir/scmroot/nosync
Cloning into '/var/lib/mock/f40-build-2299592-56642/root/chroot_tmpdir/scmroot/nosync'...
$ git fetch origin a1e3fbbbb326dfb80a95251b72bb3e20a0bfa69c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nosync
 * [new ref]         a1e3fbbbb326dfb80a95251b72bb3e20a0bfa69c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1e3fbb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild