$ git clone -n http://git.inferitos.ru/rpms/xz /var/lib/mock/inferit-8_8-build-el8_6-12953-22776/root/chroot_tmpdir/scmroot/xz
Cloning into '/var/lib/mock/inferit-8_8-build-el8_6-12953-22776/root/chroot_tmpdir/scmroot/xz'...
$ git fetch origin changed/i8c/xz-5.2.4-4.el8_6:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/xz
 * [new tag]         changed/i8c/xz-5.2.4-4.el8_6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa94dd7 edit changelog for import xz-5.2.4-4.el8_6