$ git clone -n http://git.inferitos.ru/rpms/gcc-toolset-10-gcc /var/lib/mock/inferit-8_8-build-el8_5-25692-44575/root/chroot_tmpdir/scmroot/gcc-toolset-10-gcc
Cloning into '/var/lib/mock/inferit-8_8-build-el8_5-25692-44575/root/chroot_tmpdir/scmroot/gcc-toolset-10-gcc'...
$ git fetch origin changed/i8c/gcc-toolset-10-gcc-10.3.1-1.2.el8_5:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/gcc-toolset-10-gcc
 * [new tag]         changed/i8c/gcc-toolset-10-gcc-10.3.1-1.2.el8_5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 875a156 edit changelog for import gcc-toolset-10-gcc-10.3.1-1.2.el8_5