$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-cli.git /var/lib/mock/f42-build-3367148-45050/root/chroot_tmpdir/scmroot/apache-commons-cli
Cloning into '/var/lib/mock/f42-build-3367148-45050/root/chroot_tmpdir/scmroot/apache-commons-cli'...
$ git fetch origin 7f93d3082029e695fb65dd78efc5763f2c71e23e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-cli
 * [new ref]         7f93d3082029e695fb65dd78efc5763f2c71e23e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f93d30 Remove javadoc subpackage