$ git clone -n https://src.fedoraproject.org/rpms/libbtbb.git /var/lib/mock/f40-build-786381-134242/root/chroot_tmpdir/scmroot/libbtbb
Cloning into '/var/lib/mock/f40-build-786381-134242/root/chroot_tmpdir/scmroot/libbtbb'...
$ git fetch origin ad9905a012443be3530d19721173c7ae6969b28d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libbtbb
 * [new ref]         ad9905a012443be3530d19721173c7ae6969b28d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad9905a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild