$ git clone -n https://src.fedoraproject.org/rpms/goobook.git /var/lib/mock/f40-build-2595906-62746/root/chroot_tmpdir/scmroot/goobook
Cloning into '/var/lib/mock/f40-build-2595906-62746/root/chroot_tmpdir/scmroot/goobook'...
$ git fetch origin f858e221b3be2b12fcac88a8bf7e3cff0d370e5f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/goobook
 * [new ref]         f858e221b3be2b12fcac88a8bf7e3cff0d370e5f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f858e22 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild