$ git clone -n https://src.fedoraproject.org/rpms/fuse-btfs.git /var/lib/mock/f45-build-9338-401/root/chroot_tmpdir/scmroot/fuse-btfs
Cloning into '/var/lib/mock/f45-build-9338-401/root/chroot_tmpdir/scmroot/fuse-btfs'...
$ git fetch origin 7e0c073bc7e49dfafbbd035237439cbb160e9320:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fuse-btfs
 * [new ref]         7e0c073bc7e49dfafbbd035237439cbb160e9320 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e0c073 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild