$ git clone -n https://src.fedoraproject.org/rpms/vagrant.git /var/lib/mock/f41-build-1016786-17909/root/chroot_tmpdir/scmroot/vagrant
Cloning into '/var/lib/mock/f41-build-1016786-17909/root/chroot_tmpdir/scmroot/vagrant'...
$ git fetch origin 7dc964d6011521a704cfeb78d886ab8c0391875b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vagrant
 * [new ref]         7dc964d6011521a704cfeb78d886ab8c0391875b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7dc964d Eliminate use of obsolete %patchN syntax (#2283636)