$ git clone -n https://src.fedoraproject.org/rpms/rubygem-actionview.git /var/lib/mock/f39-build-1889011-42792/root/chroot_tmpdir/scmroot/rubygem-actionview
Cloning into '/var/lib/mock/f39-build-1889011-42792/root/chroot_tmpdir/scmroot/rubygem-actionview'...
$ git fetch origin a06ccdf9bfc13c8601cb2a67f9337b0927da79c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-actionview
 * [new ref]         a06ccdf9bfc13c8601cb2a67f9337b0927da79c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a06ccdf Enable tests