$ git clone -n https://src.fedoraproject.org/rpms/kf5-libksane.git /var/lib/mock/f40-build-2292753-56156/root/chroot_tmpdir/scmroot/kf5-libksane
Cloning into '/var/lib/mock/f40-build-2292753-56156/root/chroot_tmpdir/scmroot/kf5-libksane'...
$ git fetch origin f3404f424e6fbdc0acaa2fedd518a3b272af055c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-libksane
 * [new ref]         f3404f424e6fbdc0acaa2fedd518a3b272af055c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3404f4 Moved to libksane, in the qt5 subpackage