$ git clone -n http://git.inferitos.ru/rpms/compat-guile18 /var/lib/mock/inferit-8_8-build-28095-47229/root/chroot_tmpdir/scmroot/compat-guile18
Cloning into '/var/lib/mock/inferit-8_8-build-28095-47229/root/chroot_tmpdir/scmroot/compat-guile18'...
$ git fetch origin changed/i8/compat-guile18-1.8.8-22.el8.inferit:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/compat-guile18
 * [new tag]         changed/i8/compat-guile18-1.8.8-22.el8.inferit -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 491cea6 Fixed syntax in spec for Obsoletes parameter