$ git clone -n http://git.inferitos.ru/rpms/bc /var/lib/mock/inferit-8_8-build-15885-23083/root/chroot_tmpdir/scmroot/bc
Cloning into '/var/lib/mock/inferit-8_8-build-15885-23083/root/chroot_tmpdir/scmroot/bc'...
$ git fetch origin changed/i8c/bc-1.07.1-5.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/bc
 * [new tag]         changed/i8c/bc-1.07.1-5.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15ad8b8 edit changelog for import bc-1.07.1-5.el8