$ git clone -n https://src.fedoraproject.org/rpms/plasma-nano.git /var/lib/mock/f42-build-862355-170742/root/chroot_tmpdir/scmroot/plasma-nano
Cloning into '/var/lib/mock/f42-build-862355-170742/root/chroot_tmpdir/scmroot/plasma-nano'...
$ git fetch origin 1ea9e64a785d9e007bf14a333ebec4a6499cb555:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-nano
 * [new ref]         1ea9e64a785d9e007bf14a333ebec4a6499cb555 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ea9e64 6.2.4