$ git clone -n https://src.fedoraproject.org/rpms/nats-server.git /var/lib/mock/f40-build-2280318-55389/root/chroot_tmpdir/scmroot/nats-server
Cloning into '/var/lib/mock/f40-build-2280318-55389/root/chroot_tmpdir/scmroot/nats-server'...
$ git fetch origin e2c69535d7dfd5b4b61911c0c7446fa35a113112:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nats-server
 * [new ref]         e2c69535d7dfd5b4b61911c0c7446fa35a113112 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2c6953 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild