$ git clone -n https://src.fedoraproject.org/rpms/python-vobject.git /var/lib/mock/f45-build-33597-671/root/chroot_tmpdir/scmroot/python-vobject
Cloning into '/var/lib/mock/f45-build-33597-671/root/chroot_tmpdir/scmroot/python-vobject'...
$ git fetch origin 5545af01d628036be155e2bcc319291aeb83454c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-vobject
 * [new ref]         5545af01d628036be155e2bcc319291aeb83454c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5545af0 Update to 0.9.9