$ git clone -n https://src.fedoraproject.org/rpms/kf6-kbookmarks.git /var/lib/mock/f40-build-2296342-56382/root/chroot_tmpdir/scmroot/kf6-kbookmarks
Cloning into '/var/lib/mock/f40-build-2296342-56382/root/chroot_tmpdir/scmroot/kf6-kbookmarks'...
$ git fetch origin 94a37ca7be6ae9e8cb51b821c0e55b3ebaaef4c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kbookmarks
 * [new ref]         94a37ca7be6ae9e8cb51b821c0e55b3ebaaef4c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94a37ca Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild