$ git clone -n http://git.inferitos.ru/rpms/gc /var/lib/mock/inferit-8_8-build-13610-23032/root/chroot_tmpdir/scmroot/gc
Cloning into '/var/lib/mock/inferit-8_8-build-13610-23032/root/chroot_tmpdir/scmroot/gc'...
$ git fetch origin changed/i8c/gc-7.6.4-3.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/gc
 * [new tag]         changed/i8c/gc-7.6.4-3.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3bfa12 edit changelog for import gc-7.6.4-3.el8