$ git clone -n https://src.fedoraproject.org/rpms/rubygem-apipie-rails.git /var/lib/mock/f41-build-746259-13353/root/chroot_tmpdir/scmroot/rubygem-apipie-rails
Cloning into '/var/lib/mock/f41-build-746259-13353/root/chroot_tmpdir/scmroot/rubygem-apipie-rails'...
$ git fetch origin 1306b03384e64c07c4ebb81e1bd42232d95f84a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-apipie-rails
 * [new ref]         1306b03384e64c07c4ebb81e1bd42232d95f84a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1306b03 Eliminate use of obsolete %patchN syntax (#2283636)