$ git clone -n https://src.fedoraproject.org/rpms/nx-libs.git /var/lib/mock/f41-build-849267-164753/root/chroot_tmpdir/scmroot/nx-libs
Cloning into '/var/lib/mock/f41-build-849267-164753/root/chroot_tmpdir/scmroot/nx-libs'...
$ git fetch origin 97e1408e9434ac23f870755c8388d214aa381237:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nx-libs
 * [new ref]         97e1408e9434ac23f870755c8388d214aa381237 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97e1408 Upload source