$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-jxpath.git /var/lib/mock/f43-build-61078570-6588737/root/chroot_tmpdir/scmroot/apache-commons-jxpath
Cloning into '/var/lib/mock/f43-build-61078570-6588737/root/chroot_tmpdir/scmroot/apache-commons-jxpath'...
$ git fetch origin b9c3dcff94b9d7bac05c3762ac7b57c2479a1927:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-jxpath
 * [new ref]         b9c3dcff94b9d7bac05c3762ac7b57c2479a1927 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9c3dcf Update to upstream version 1.4.0