$ git clone -n https://src.fedoraproject.org/rpms/rabbitmq-server.git /var/lib/mock/f39-build-1833432-41893/root/chroot_tmpdir/scmroot/rabbitmq-server
Cloning into '/var/lib/mock/f39-build-1833432-41893/root/chroot_tmpdir/scmroot/rabbitmq-server'...
$ git fetch origin f73b07d2f626a6dfd4d02a83cbe664b95d683ae6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rabbitmq-server
 * [new ref]         f73b07d2f626a6dfd4d02a83cbe664b95d683ae6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f73b07d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild