$ git clone -n https://src.fedoraproject.org/rpms/python-injector.git /var/lib/mock/f40-build-2098271-50437/root/chroot_tmpdir/scmroot/python-injector
Cloning into '/var/lib/mock/f40-build-2098271-50437/root/chroot_tmpdir/scmroot/python-injector'...
$ git fetch origin d62a709c2fabd71853cbe01a977cab77d8f8f32e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-injector
 * [new ref]         d62a709c2fabd71853cbe01a977cab77d8f8f32e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d62a709 0.21.0