$ git clone -n https://src.fedoraproject.org/rpms/libwebsockets.git /var/lib/mock/f45-build-17242-497/root/chroot_tmpdir/scmroot/libwebsockets
Cloning into '/var/lib/mock/f45-build-17242-497/root/chroot_tmpdir/scmroot/libwebsockets'...
$ git fetch origin dda2ed37fcb1bd0e9d7b23ac4faceeadb818ce52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libwebsockets
 * [new ref]         dda2ed37fcb1bd0e9d7b23ac4faceeadb818ce52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dda2ed3 Update to 4.5.8