$ git clone -n https://src.fedoraproject.org/rpms/bubblemail.git /var/lib/mock/f39-build-1691174-41136/root/chroot_tmpdir/scmroot/bubblemail
Cloning into '/var/lib/mock/f39-build-1691174-41136/root/chroot_tmpdir/scmroot/bubblemail'...
$ git fetch origin 5a8c4ad40bf2594d2dfec4f4177477f0532f68e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bubblemail
 * [new ref]         5a8c4ad40bf2594d2dfec4f4177477f0532f68e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a8c4ad Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild