$ git clone -n https://src.fedoraproject.org/rpms/arprec.git /var/lib/mock/f39-build-1494784-34542/root/chroot_tmpdir/scmroot/arprec
Cloning into '/var/lib/mock/f39-build-1494784-34542/root/chroot_tmpdir/scmroot/arprec'...
$ git fetch origin 8bc09b4d2f59826da058658ddab7f68352378d9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arprec
 * [new ref]         8bc09b4d2f59826da058658ddab7f68352378d9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8bc09b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild