$ git clone -n https://src.fedoraproject.org/rpms/linux-user-chroot.git /var/lib/mock/f40-build-746702-112832/root/chroot_tmpdir/scmroot/linux-user-chroot
Cloning into '/var/lib/mock/f40-build-746702-112832/root/chroot_tmpdir/scmroot/linux-user-chroot'...
$ git fetch origin 6c168f1a8280530200cd357482209e2f64c26cec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/linux-user-chroot
 * [new ref]         6c168f1a8280530200cd357482209e2f64c26cec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c168f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild