$ git clone -n https://src.fedoraproject.org/rpms/fedora-messaging.git /var/lib/mock/f39-build-1638505-40061/root/chroot_tmpdir/scmroot/fedora-messaging
Cloning into '/var/lib/mock/f39-build-1638505-40061/root/chroot_tmpdir/scmroot/fedora-messaging'...
$ git fetch origin 6004f7b55f18c05ed79423b27a7019cea0932c45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fedora-messaging
 * [new ref]         6004f7b55f18c05ed79423b27a7019cea0932c45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6004f7b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild