$ git clone -n https://src.fedoraproject.org/rpms/nyx.git /var/lib/mock/f45-build-19902-557/root/chroot_tmpdir/scmroot/nyx
Cloning into '/var/lib/mock/f45-build-19902-557/root/chroot_tmpdir/scmroot/nyx'...
$ git fetch origin 565446784fece226c9177e6671a59efc6d9a3752:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nyx
 * [new ref]         565446784fece226c9177e6671a59efc6d9a3752 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5654467 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild