$ git clone -n http://git.inferitos.ru/rpms/rubygem-pg /var/lib/mock/inferit-10_0-bootstrap-build-99883-184335/root/chroot_tmpdir/scmroot/rubygem-pg
Cloning into '/var/lib/mock/inferit-10_0-bootstrap-build-99883-184335/root/chroot_tmpdir/scmroot/rubygem-pg'...
$ git fetch origin changed/i10c-beta/rubygem-pg-1.5.4-5.el10:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/rubygem-pg
 * [new tag]         changed/i10c-beta/rubygem-pg-1.5.4-5.el10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29e5b13 import rubygem-pg-1.5.4-5.el10