$ git clone -n http://git.inferitos.ru/rpms/gcc-toolset-9-valgrind /var/lib/mock/inferit-8_8-build-25686-44582/root/chroot_tmpdir/scmroot/gcc-toolset-9-valgrind
Cloning into '/var/lib/mock/inferit-8_8-build-25686-44582/root/chroot_tmpdir/scmroot/gcc-toolset-9-valgrind'...
$ git fetch origin changed/i8c/gcc-toolset-9-valgrind-3.15.0-9.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/gcc-toolset-9-valgrind
 * [new tag]         changed/i8c/gcc-toolset-9-valgrind-3.15.0-9.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 595285a edit changelog for import gcc-toolset-9-valgrind-3.15.0-9.el8