$ git clone -n https://src.fedoraproject.org/rpms/obfs4.git /var/lib/mock/f40-build-2358261-60309/root/chroot_tmpdir/scmroot/obfs4
Cloning into '/var/lib/mock/f40-build-2358261-60309/root/chroot_tmpdir/scmroot/obfs4'...
$ git fetch origin d61d2d7f90cb3761080be4ab477903654aa261f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obfs4
 * [new ref]         d61d2d7f90cb3761080be4ab477903654aa261f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d61d2d7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild