$ git clone -n https://src.fedoraproject.org/rpms/libxls.git /var/lib/mock/f45-build-17364-498/root/chroot_tmpdir/scmroot/libxls
Cloning into '/var/lib/mock/f45-build-17364-498/root/chroot_tmpdir/scmroot/libxls'...
$ git fetch origin fa47cdfd7ff8ead69de376d8b91fdf7c093ca6bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxls
 * [new ref]         fa47cdfd7ff8ead69de376d8b91fdf7c093ca6bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa47cdf Backport CVE patches