$ git clone -n http://git.inferitos.ru/rpms/gcc-toolset-9-dyninst /var/lib/mock/inferit-8_8-build-25678-44582/root/chroot_tmpdir/scmroot/gcc-toolset-9-dyninst
Cloning into '/var/lib/mock/inferit-8_8-build-25678-44582/root/chroot_tmpdir/scmroot/gcc-toolset-9-dyninst'...
$ git fetch origin changed/i8c/gcc-toolset-9-dyninst-10.1.0-1.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/gcc-toolset-9-dyninst
 * [new tag]         changed/i8c/gcc-toolset-9-dyninst-10.1.0-1.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68b45a5 edit changelog for import gcc-toolset-9-dyninst-10.1.0-1.el8