$ git clone -n https://src.fedoraproject.org/rpms/emacs.git /var/lib/mock/f40-build-793357-138856/root/chroot_tmpdir/scmroot/emacs
Cloning into '/var/lib/mock/f40-build-793357-138856/root/chroot_tmpdir/scmroot/emacs'...
$ git fetch origin e99b18145c26b51b18fa50788ac474e848607cce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs
 * [new ref]         e99b18145c26b51b18fa50788ac474e848607cce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e99b181 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild