$ git clone -n https://src.fedoraproject.org/rpms/libksane.git /var/lib/mock/f45-build-16453-486/root/chroot_tmpdir/scmroot/libksane
Cloning into '/var/lib/mock/f45-build-16453-486/root/chroot_tmpdir/scmroot/libksane'...
$ git fetch origin e44893bb0fe4a29987480dfcb7ef981872bb0cc9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libksane
 * [new ref]         e44893bb0fe4a29987480dfcb7ef981872bb0cc9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e44893b 26.08.1