$ git clone -n http://git.inferitos.ru/rpms/postfix /var/lib/mock/inferit-9_1-bootstrap-build-3686-3574/root/chroot_tmpdir/scmroot/postfix
Cloning into '/var/lib/mock/inferit-9_1-bootstrap-build-3686-3574/root/chroot_tmpdir/scmroot/postfix'...
$ git fetch origin changed/i9c/postfix-3.5.9-19.el9:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/postfix
 * [new tag]         changed/i9c/postfix-3.5.9-19.el9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71b7a93 import postfix-3.5.9-19.el9