$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-jexl.git /var/lib/mock/f41-build-1232156-22865/root/chroot_tmpdir/scmroot/apache-commons-jexl
Cloning into '/var/lib/mock/f41-build-1232156-22865/root/chroot_tmpdir/scmroot/apache-commons-jexl'...
$ git fetch origin 69f490ea666e9e6c389eda241d2e9a9515d2130c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-jexl
 * [new ref]         69f490ea666e9e6c389eda241d2e9a9515d2130c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69f490e Version 3.4.0