$ git clone -n http://git.inferitos.ru/rpms/eigen3 /var/lib/mock/inferit-9_3-bootstrap-build-23913-40264/root/chroot_tmpdir/scmroot/eigen3
Cloning into '/var/lib/mock/inferit-9_3-bootstrap-build-23913-40264/root/chroot_tmpdir/scmroot/eigen3'...
$ git fetch origin changed/i9c/eigen3-3.4.0-2.el9:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/eigen3
 * [new tag]         changed/i9c/eigen3-3.4.0-2.el9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b3a2e1 import eigen3-3.4.0-2.el9