$ git clone -n https://src.fedoraproject.org/rpms/R-zoo.git /var/lib/mock/f40-build-789260-135692/root/chroot_tmpdir/scmroot/R-zoo
Cloning into '/var/lib/mock/f40-build-789260-135692/root/chroot_tmpdir/scmroot/R-zoo'...
$ git fetch origin 818bc9b5e0fb9946066ab47e4328c6445a0c805a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-zoo
 * [new ref]         818bc9b5e0fb9946066ab47e4328c6445a0c805a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 818bc9b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild