$ git clone -n http://git.inferitos.ru/rpms/libpng /var/lib/mock/inferit-8_8-build-16311-23083/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/inferit-8_8-build-16311-23083/root/chroot_tmpdir/scmroot/libpng'...
$ git fetch origin changed/i8c/libpng-1.6.34-5.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libpng
 * [new tag]         changed/i8c/libpng-1.6.34-5.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a0c76b edit changelog for import libpng-1.6.34-5.el8