$ git clone -n https://src.fedoraproject.org/rpms/libhubbub.git /var/lib/mock/f45-build-16316-485/root/chroot_tmpdir/scmroot/libhubbub
Cloning into '/var/lib/mock/f45-build-16316-485/root/chroot_tmpdir/scmroot/libhubbub'...
$ git fetch origin 0ab920cfd9dcf1d7d416e706c7a89ee1887c2884:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libhubbub
 * [new ref]         0ab920cfd9dcf1d7d416e706c7a89ee1887c2884 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ab920c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild