$ git clone -n http://git.inferitos.ru/rpms/mesa-demos /var/lib/mock/inferit-9_4-aarch64-bootstrap-build-57526-126565/root/chroot_tmpdir/scmroot/mesa-demos
Cloning into '/var/lib/mock/inferit-9_4-aarch64-bootstrap-build-57526-126565/root/chroot_tmpdir/scmroot/mesa-demos'...
$ git fetch origin changed/i9c/mesa-demos-8.4.0-12.20210504git0f9e7d9.el9:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/mesa-demos
 * [new tag]         changed/i9c/mesa-demos-8.4.0-12.20210504git0f9e7d9.el9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5115f5a import mesa-demos-8.4.0-12.20210504git0f9e7d9.el9