$ git clone -n http://git.inferitos.ru/rpms/rubygem-mocha.git /var/lib/mock/inferit-9-epel-build-20423-33932/root/chroot_tmpdir/scmroot/rubygem-mocha
Cloning into '/var/lib/mock/inferit-9-epel-build-20423-33932/root/chroot_tmpdir/scmroot/rubygem-mocha'...
$ git fetch origin 3cc6b465abb84af579591fc2c7a7ad0945b88919:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/rubygem-mocha
 * [new ref]         3cc6b465abb84af579591fc2c7a7ad0945b88919 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cc6b46 import rubygem-mocha-1.15.0-3.el9