$ git clone -n http://git.inferitos.ru/rpms/postfix /var/lib/mock/inferit-10_0-bootstrap-build-98578-183020/root/chroot_tmpdir/scmroot/postfix
Cloning into '/var/lib/mock/inferit-10_0-bootstrap-build-98578-183020/root/chroot_tmpdir/scmroot/postfix'...
$ git fetch origin changed/i10c-beta/postfix-3.8.5-8.el10:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/postfix
 * [new tag]         changed/i10c-beta/postfix-3.8.5-8.el10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21b5117 import postfix-3.8.5-8.el10