$ git clone -n https://src.fedoraproject.org/rpms/woodstox-core.git /var/lib/mock/f42-build-3355531-45025/root/chroot_tmpdir/scmroot/woodstox-core
Cloning into '/var/lib/mock/f42-build-3355531-45025/root/chroot_tmpdir/scmroot/woodstox-core'...
$ git fetch origin 8e3fb47719e19c4d5d44d5f9228a4dc3f043a899:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/woodstox-core
 * [new ref]         8e3fb47719e19c4d5d44d5f9228a4dc3f043a899 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e3fb47 Remove javadoc subpackage