$ git clone -n http://git.inferitos.ru/rpms/gcc /var/lib/mock/inferit-8_8-build-25644-44582/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/inferit-8_8-build-25644-44582/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin changed/i8c/gcc-8.5.0-18.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/gcc
 * [new tag]         changed/i8c/gcc-8.5.0-18.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b33315 edit changelog for import gcc-8.5.0-18.el8