$ git clone -n https://src.fedoraproject.org/rpms/rust-ntest.git /var/lib/mock/f40-build-1682105-24246/root/chroot_tmpdir/scmroot/rust-ntest
Cloning into '/var/lib/mock/f40-build-1682105-24246/root/chroot_tmpdir/scmroot/rust-ntest'...
$ git fetch origin f9c78a9f37899cc239d2161e7d7c3a98c54524a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ntest
 * [new ref]         f9c78a9f37899cc239d2161e7d7c3a98c54524a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9c78a9 Update to version 0.9.3; Fixes RHBZ#2268447