$ git clone -n https://src.fedoraproject.org/rpms/ocserv.git /var/lib/mock/f42-build-side-1-3583690-46890/root/chroot_tmpdir/scmroot/ocserv
Cloning into '/var/lib/mock/f42-build-side-1-3583690-46890/root/chroot_tmpdir/scmroot/ocserv'...
$ git fetch origin e45ab8cbe6d421eca94ca54de371845f3f1a8b8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocserv
 * [new ref]         e45ab8cbe6d421eca94ca54de371845f3f1a8b8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e45ab8c Add explicit BR: libxcrypt-devel