$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-jexl.git /var/lib/mock/f40-build-2260660-54416/root/chroot_tmpdir/scmroot/apache-commons-jexl
Cloning into '/var/lib/mock/f40-build-2260660-54416/root/chroot_tmpdir/scmroot/apache-commons-jexl'...
$ git fetch origin 1fe81c4cb1b7356cc1c430a72dff7c0daa1854ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-jexl
 * [new ref]         1fe81c4cb1b7356cc1c430a72dff7c0daa1854ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fe81c4 Add bootstrap mode to break a dependency cycle