$ git clone -n http://git.inferitos.ru/rpms/gcc-toolset-9-make /var/lib/mock/inferit-8_8-build-side-196-26500-44876/root/chroot_tmpdir/scmroot/gcc-toolset-9-make
Cloning into '/var/lib/mock/inferit-8_8-build-side-196-26500-44876/root/chroot_tmpdir/scmroot/gcc-toolset-9-make'...
$ git fetch origin changed/i8c/gcc-toolset-9-make-4.2.1-2.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/gcc-toolset-9-make
 * [new tag]         changed/i8c/gcc-toolset-9-make-4.2.1-2.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2fdd84 edit changelog for import gcc-toolset-9-make-4.2.1-2.el8