$ git clone -n http://git.inferitos.ru/rpms/which /var/lib/mock/inferit-8_8-bootstrap-build-28802-48643/root/chroot_tmpdir/scmroot/which
Cloning into '/var/lib/mock/inferit-8_8-bootstrap-build-28802-48643/root/chroot_tmpdir/scmroot/which'...
$ git fetch origin changed/i8c/which-2.21-20.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/which
 * [new tag]         changed/i8c/which-2.21-20.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1ddfe8 import which-2.21-20.el8